A certain calculator is able to display at most 10 digits, so that any number with a total of more than 10 digits before and after the decimal point cannot be displayed accurately. If x & y are +ve integers less than 1000, can the result of dividing *x* by *y* be displayed accurately on the calculator?

1) 105 < x < 108

2) 3 < y < 6

2) 3 < y < 6

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Preitee Ranjan Pradhan answered • 12 hours ago

Answer will be B here

terminating vs non terminating

terminating vs non terminating

Himanshu Bharti asked • 43 minutes ago

What is the greatest common factor of the positive integers *j *and *k*?

(1) *k *= *j *+ 1?

(2) *jk *is divisible by 5.

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

If n is an integer, then n is divisible by how many +ve integers?

1) n is the product of 2 different prime numbers

2) n and 2^{3} are each divisible by same number of +ve integers

2) n and 2

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Preitee Ranjan Pradhan answered • 12 hours ago

Answer is D

If ‘x’ and ‘y’ are non-negative integers, what is the value of x + y?

(1) x^{4} is even, where x is a prime number.

(2) x^{y }is odd.

- a)Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- b)Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- c)BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- d)EACH statement ALONE is sufficient.
- e)Statements (1) and (2) TOGETHER are NOT sufficient.

Correct answer is option 'C'. Can you explain this answer?

Preitee Ranjan Pradhan answered • 12 hours ago

In my opinion two statements contradicts each othe bkz in option 1 clearly x=2

but in option 2 x power y is odd , implies x is odd.

so no need to combine even .it's a non GMAT framed qn.

but in option 2 x power y is odd , implies x is odd.

so no need to combine even .it's a non GMAT framed qn.

Himanshu Bharti asked • 49 minutes ago

The numbers *x *and *y *are three-digit positive integers, and *x *+ *y *is a four-digit integer. The tens digit of *x *equals 7 and the tens digit of *y *equals 5. If *x *< *y*, which of the following must be true?

I. The units digit of *x *+ *y *is greater than the units digit of either *x *or *y*.

II. The tens digit of*x *+ *y *equals 2.

III. The hundreds digit of*y *is at least 5.

II. The tens digit of

III. The hundreds digit of

- a)II only
- b)III only
- c)I and III only
- d)II and III only

Correct answer is option 'B'. Can you explain this answer?

Tejas Patni asked • 50 minutes ago

Is *x*^{2} + *y*^{2} > 6?

1) (*x *+ *y*)^{2} > 6

2)*xy *= 2

2)

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

Tejas Patni asked • 52 minutes ago

If positive integer x is a multiple of 6 and positive integer y is a multiple of 14, is xy a multiple of 105?

(1) x is a multiple of 9. ?

(2) y is a multiple of 25. ?

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Himanshu Bharti asked • 53 minutes ago

If m, p, and t are positive integers and m < p < t, is the product mpt an even integer?

1) t – p = p - m

2) t – m = 16

2) t – m = 16

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

Tejas Patni asked • 5 hours ago

Is *x* a perfect square?

1) *x* ≤ 1

2)*x* is a non-negative number

2)

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'B'. Can you explain this answer?

Jaismin Harneja asked • 6 hours ago

The *Husbands of Fierce Women*, a volunteer service organization, __admits as members only men who can prove problem__ from the wife or a member of her family.

- a)admits as members, only men who can prove problem
- b)admits as members, men who can prove problem
- c)only admit as members, men who can prove problem
- d)admits as members, men who can prove problem only

Correct answer is option 'A'. Can you explain this answer?

Seylan Naidoo asked • 6 hours ago

Consumption of __dairy products made from milk often trigger severely debilitating symptoms such as increased levels of cholesterol, allergy and mucus but, at a proper dose, also cause a significant reduction in__ the weight of obese people.

- a)dairy products made from milk often triggers severely debilitating symptoms such as increased levels of cholesterol, allergy and mucus but, at a proper dose, also causes a significant reduction in
- b)products made from milk often trigger severely debilitating symptoms such as increased level of cholesterol, allergy and mucus but, at a proper dose, also cause significantly reduced
- c)dairy products made from milk often trigger severely debilitating symptoms such as increased levels of cholesterol, allergy and mucus but, at a proper dose, also cause a significant reduction in
- d)dairy products made from milk often triggers severely debilitating symptoms such as increased level of cholesterol, allergy and mucus but, at a proper dose, also cause a significant reduction in

Correct answer is option 'C'. Can you explain this answer?

Tejas Patni asked • 6 hours ago

Fast food chains constantly face the problem of low employee retention, to counter which the companies offer high salaries. The companies have come up with the solution of hiring retired people who have a very low attrition rate. However, **their time taken to service an order is more and they require going through long training programs at regular intervals**. Thus, for most fast food chains the gain in employee retention does not compensate for the increase in time taken to serve each customer. Nevertheless, since **the customers continue to be more appreciative when served by retired people**, their employment is likely to become an industry-wide feature.

In the argument above, the two portions in boldface play which of the following roles?

Tejas Patni asked • 20 hours ago

Is p + q > r + s?

1) p > r + s

2) q > r + s

2) q > r + s

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

Tejas Patni asked • 20 hours ago

If x & y are +ve integers, what is the remainder when x is divided by y?

1) When x is divided by 2y, the remainder is 4

2) When x + y is divided by y, the remainder is 4

1) When x is divided by 2y, the remainder is 4

2) When x + y is divided by y, the remainder is 4

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Tejas Patni asked • 20 hours ago

If z_{1}, z_{2}, z_{3},..........,z_{n} is a series of consecutive +ve integers, is the sum of all the integers in this series odd?

1) Average of all the numbers in the series is odd

2) n is odd

2) n is odd

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Tejas Patni asked • 20 hours ago

Is z + z < z?

1) -4z > 4z

2) z^{3} < z^{2}

2) z

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Tejas Patni asked • 20 hours ago

The participants in a race consisted of 3 teams with 3 runners on each team. A team was awarded 6Mn points if one of its runner finished in nth place where 1 ≤ n ≤ 5. If all the runners finished the race & there were no ties, was each team awarded at least one point?

1) No team awarded more than a total of 6 points

2) No pair of teammates finished in consecutive places among the top five places.

2) No pair of teammates finished in consecutive places among the top five places.

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Tejas Patni asked • 20 hours ago

p is an integer, n is an integer and p/n is an integer. Is p/n=odd?

1) p is divisible by 4

2) n is divisible by 4

2) n is divisible by 4

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

Tejas Patni asked • yesterday

Alex and Hales started rowing towards one another at constant speeds and met after rowing for an hour. The initial distance between Alex and Hales was 20 kilometers and Alex rowed downstream while Hales rowed upstream during this journey. On some other day, the time taken by Alex alone, rowing at the same constant speed, to cover the distance between these two points going upstream was 75 minutes more than the time taken by him to cover the same distance going downstream. What was the time taken in hours by Hales to cover 20 kilometers going upstream? Assume the speed of the stream to be 4 kilometers per hour

- a)1.25
- b)1.6
- c)2.5
- d)5
- e)8

Correct answer is option 'D'. Can you explain this answer?

Tejas Patni asked • yesterday

James started from his home and drove eastwards at a constant speed. Exactly 90 minutes after James stated from his home, his brother Patrick started from the same point and drove in the same direction as James did at a different constant speed. Patrick overtook James exactly 90 minutes after Patrick started his journey and then continued driving at the same speed for another 2 hours. By what percentage should Patrick reduce his speed so that James could catch up with Patrick in exactly 8 hours after Patrick overtook James?

- a)25%
- b)33%
- c)50%
- d)67%
- e)75%

Correct answer is option 'D'. Can you explain this answer?

Siddharth Raman asked • yesterday

Observation of different game champions __show that the most successful in the struggle to reach the top are those who are most adaptable to__ changes in their games.

- a)show that the most successful in the struggle to reach the top are those who are most adaptable to
- b)shows that the most successful in the struggle to reach the top are those which are most adapted
- c)shows that the most successful in the struggle to reach the top are those who are most adaptable to
- d)shows that those who have reached the top have been the most adaptable to

Correct answer is option 'C'. Can you explain this answer?

Yash Chhabria asked • yesterday

There are 40 students in a classroom, 9/20 of them are boys and 4/5 of them are right-handed. How many right-handed boys are there in the classroom?

- a)Between 10 and 32.
- b)Between 14 and 32.
- c)Between 10 and 18.
- d)Between 14 and 18.
- e)Between 18 and 36

Correct answer is option 'C'. Can you explain this answer?

Anmol Gupta asked • yesterday

Recently, a plane crashed near the outskirts of Berlin within minutes after its takeoff from Berlin airport. Initial analysis confirmed that the crash was caused by either the usage of substandard fuel or a fault in the control board. Since the airport staff tested the control board before the plane took off, analysts hypothesize that the reason behind the plane crash was substandard fuel.

Which of the following options, if true, most strengthens the analysts’ hypothesis?

Chitwan Singhal asked • yesterday

Phil drives east from his home for 2 hours before realizing that he will run out of fuel in another 70 miles. Nevertheless, he drives for another 10 miles east before returning back home via the same route. If he drives at a constant speed throughout his journey and returns home with fuel left for another 10 miles, how much time does he take for his journey eastwards?

- a)2.0 hours
- b)2.5 hours
- c)3.0 hours
- d)3.5 hours
- e)Cannot be determined

Correct answer is option 'B'. Can you explain this answer?

Ashwitha K S asked • yesterday

To reach her office from her home, Karen traveled x miles at a speed of y miles per hour. On her way back, via the same route, she travels for ten miles before stopping for an hour. If Karen drove at y miles per hour till she stopped, by what percentage should she increase her speed so that the overall time taken to reach back home from the office is the same as that taken to reach the office from home?

Zannatul Ferdous asked • yesterday

Software’s programming difficulties, __already made acute by the rising costs, threatens__ to become even more severe as a result of lobbying by special-interest groups.

- a)already made acute by the rising costs, threatens
- b)already made acute by the rising costs, threaten
- c)already made acuter by the rising costs, threaten
- d)after having been made acute by rising costs, threatens

Correct answer is option 'B'. Can you explain this answer?

Prasanta Das asked • 2 days ago

If x - y > 0, is x > 0?

1) x > y

2) y > 0

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'B'. Can you explain this answer?

Gabbar Singh asked • 2 days ago

If xy < 0, is x > 0?

1) x - y = 3

2) x^{2} = 9

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'B'. Can you explain this answer?

Danai Evans asked • 2 days ago

If xy > 0, is x > 0?

1) x - y = 3

2) x^{2} = 9

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

Ilonu Nicholas asked • 2 days ago

Is *x* a negative number?

1) x^{2} is a positive number

2) x*|y| is not positive

1) x

2) x*|y| is not positive

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

David Despas asked • 2 days ago

If there are more than two numbers in the list, is each of the numbers in the list equal to 0?

1) The product of any two numbers in the list is equal to 0

2) The sum of any two numbers in the list is equal to 0

1) The product of any two numbers in the list is equal to 0

2) The sum of any two numbers in the list is equal to 0

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Alina Chauhan asked • 2 days ago

- a)Thinking about a question or working for a solution on the paper leads to oversleeping.
- b)Thinking about a question or working for a solution on the paper lead to oversleeping.
- c)To think about a question and to work for a solution on the paper leads to oversleeping.
- d)Thinking about a question and working for a solution on the paper leads to oversleeping.

Correct answer is option 'A'. Can you explain this answer?

Boma Banjo asked • 2 days ago

The feedback collection boxes installed at the reception of our hotels do not really serve their real purpose. As these boxes are in plain sight, many customers do not feel comfortable depositing the feedback forms in front of the hotel staff. Moreover, the hotel staff can easily access and destroy the feedback form deposited by a guest who intends to report a negative experience. Accordingly, the hotel should make individual phone calls to guests after they have completed their stay, giving them a fair opportunity to express their real experience of staying at the hotel.

Which of the following would it be most important to consider while evaluating the new proposed method of obtaining feedback?

Sweena Gore asked • 2 days ago

Alan alone can build (1/x)^{ th} of a wall in 1 day. If Alan & Mike together can build the entire wall in 2 days, then what fraction of the wall can Mike alone build in 1 day?

- a)2x/(x-2)
- b)(x – 2)/2x
- c)1/2x
- d)1/(x-2)
- e)(x-2)*2x

Correct answer is option 'B'. Can you explain this answer?

Hariharan Shanmugam asked • 2 days ago

What is the remainder when the sum of the positive integers x and y is divided by 6?

1) When x is divided by 6, the remainder is 3. ?

2) When y is divided by 6, the remainder is 1.

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'B'. Can you explain this answer?

Nani Aaryan asked • 2 days ago

When 15*n*, where *n* is a positive integer, is divided by 6, the remainder is *x*. What is the value of *x*?

1) When *n* is divided by 2, the remainder is 0. ?

2) When *n* is divided by 3, the remainder is 0. ?

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Aaditya Sharma asked • 3 days ago

Proverbial wisdom states that “birds of a feather flock together.” Studies have shown that people of similar geographical and educational backgrounds and functional experience are extremely likely to found companies together. Not considering spousal teams in the dataset, it has been found that a founding team is five times more likely to be all-male or all-female team. Also, it is more likely to find founding teams that are remarkably homogenous with regard to skills and functional backgrounds.

Homogeneity has important benefits. For the founder struggling to meet the challenges of a growing startup, selecting cofounders from among the people with whom he or she probably has important things in common is often the quickest and easiest solution. Not only does it generally take less time to find such people, but it also generally takes less time to develop effective working relationships with such similar people. When founders share a background, they share a common language that facilitates communication, ensuring that the team begins the work relationship with a mutual understanding and hence can skip over part of the learning curve that would absorb the energies of people with very different backgrounds. Increasing homogeneity may therefore be a particularly alluring- and, in some ways, a particularly sensible - approach for novice founders heading into unfamiliar territory. Certainly, studies have found that the greater the heterogeneity among executive team members, the greater the risk of interpersonal conflict and the lower the group-level integration. Even though it is very appealing to opt for the “comfortable” and “easy” decision to found with similar cofounders, by doing so founders may be causing long-term problems. Teams with a wide range of pertinent functional skills may be able to build more valuable and enduring startups. Conversely, homogenous teams tend to have overlapping human capital, making it more likely that the team will have redundant strengths and be missing critical skills.

Homogeneity has important benefits. For the founder struggling to meet the challenges of a growing startup, selecting cofounders from among the people with whom he or she probably has important things in common is often the quickest and easiest solution. Not only does it generally take less time to find such people, but it also generally takes less time to develop effective working relationships with such similar people. When founders share a background, they share a common language that facilitates communication, ensuring that the team begins the work relationship with a mutual understanding and hence can skip over part of the learning curve that would absorb the energies of people with very different backgrounds. Increasing homogeneity may therefore be a particularly alluring- and, in some ways, a particularly sensible - approach for novice founders heading into unfamiliar territory. Certainly, studies have found that the greater the heterogeneity among executive team members, the greater the risk of interpersonal conflict and the lower the group-level integration. Even though it is very appealing to opt for the “comfortable” and “easy” decision to found with similar cofounders, by doing so founders may be causing long-term problems. Teams with a wide range of pertinent functional skills may be able to build more valuable and enduring startups. Conversely, homogenous teams tend to have overlapping human capital, making it more likely that the team will have redundant strengths and be missing critical skills.

From the passage, which of the following cannot be inferred as a benefit of homogenous teams?

Lea Tows asked • 3 days ago

If xyz ≠ 0, is x > 0?

1) xy > 0

2) xz > 0

1) xy > 0

2) xz > 0

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

Pushan Mojumder asked • 3 days ago

Every day, Tom walks from his home to his office, via the same route, covering s feet at a speed of x feet per minute. Today he took a different route and ended up walking 10% more than he usually does, at a speed that was 100 meters per minute faster than his usual speed. What is the percentage change in the time he took today compared to the time he takes on a usual day? (1 feet =0.3 meter)

Zannatul Ferdous asked • 3 days ago

The record left by the ancient __humans provide scientists with their primary source of information about__ prehistoric life.

- a)humans provide scientists with their primary source of information about
- b)human provide scientists with their primary source of information about
- c)humans provides scientists their primary source of information to
- d)humans provides scientists with their primary source of information about

Correct answer is option 'D'. Can you explain this answer?

Kiran Rockzz asked • 3 days ago

If a, b, c and d are positive real numbers, is

- a)Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
- b)Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
- c)BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
- d)EACH statement ALONE is sufficient to answer the question asked.
- e)Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

Correct answer is option 'B'. Can you explain this answer?

Lorenzo Carlone asked • 3 days ago

If x, y and z are integers, is x/(yz) an integer?

1) y is a factor of x more than once

2) All of the prime factors of z are also factors of y

2) All of the prime factors of z are also factors of y

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'D'. Can you explain this answer?

KRITIKA asked • 3 days ago

Researchers have recently come across a phenomenon that they have named “the obesity paradox”. The body mass index (BMI) is used as a statistical measurement to estimate healthy body weight and a high BMI is linked with multiple cardiovascular diseases. However, research data indicate that overweight people with a high BMI, compared to people with a normal BMI, have the lowest risk of cardiovascular mortality.

Which of the following, if true, most helps to explain the paradoxical findings stated in the passage?

Chandna Arora asked • 3 days ago

Organite is a kind of bioorganic fertilizer that is produced by harvesting wastewater from both households and industrial sources. The water is chemically treated at water reclamation facilities, where nutrients are extracted from the waste. These nutrients are then used to produce Organite, which has greatly decreased the need to produce synthetic nutrients. However, production of synthetic nutrients for fertilizers has increased by 60 percent over the last decade.

Which of the following, if true, most helps to explain the apparent discrepancy?

Siddharth Raman asked • 4 days ago

- a)Mastery of grammatical rules are mandatory for students and teachers as well as authors.
- b)Mastery at grammatical rules is mandatory for students and teachers as well as authors.
- c)Mastery at grammatical rules are mandatory for students and teachers and authors.
- d)Mastery of grammatical rules is mandatory for students and teachers as well as authors.

Correct answer is option 'D'. Can you explain this answer?

Ayush Pant asked • 4 days ago

Alice travels at an average speed of 60miles per hour from her home to a grocery store. She travels back to her home via same route at an average speed of 80 miles per hour. What is the average speed of her entire journey?

- a)
- b)
- c)70
- d)75
- e)82

Correct answer is option 'B'. Can you explain this answer?

Vy Thanh asked • 4 days ago

What is the remainder when the positive integer *n* is divided by the positive integer *k*, where *k* > 1?

1) *n = (k+1)*^{3}

2) *k* = 5

- a)Exactly one of the statements can answer the question
- b)Both statements are required to answer the question
- c)Each statement can answer the question individually
- d)More information is required as the information provided is insufficient to answer the question

Correct answer is option 'A'. Can you explain this answer?

Aaditya Sharma asked • 5 days ago

The role of nurturing in determining one’s behavioral traits has been hotly contested. Historically, geneticists believed that behavioral traits are inherited. After all, many properties of the brain are genetically organized and don't depend on information coming in from the senses. Since active genes are essentially inherited, most traditional geneticists believe that nurturing environment plays little role in shaping one’s behavioral traits.

However, a new line of research indicated that methyl groups can activate dormant genes, bringing about a slew of changes much later in a person’s life. The methyl group works like a placeholder in a cookbook, attaching to the DNA within each cell to select only those recipes - er, genes - necessary for that particular cell’s proteins, telling the DNA what kind of cells to form. The first such observation was in which methyl groups activated by causes ranging from exposure to certain chemicals to changes in diet set off a cascade of cellular changes resulting in cancer. Because methyl groups are attached to the genes, residing beside but separate from the double-helix DNA code, their study is dubbed epigenetics - “epi” referring to Greek for outer or above.

Behavioral geneticists, encouraged by this discovery proved that traumatic experiences such as child neglect, drug abuse, or other severe stresses also set off epigenetic changes to the DNA inside the neurons of a person’s brain, permanently altering behavior. Similarly, through multivariate analysis, they proved that identical twins, in scenarios where one twin has gone through a life altering event, can have vastly different reaction to a stressful situation.

The primary purpose of the passage is to

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