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Test: Hardy Weinberg Principle


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15 Questions MCQ Test Biology Class 12 | Test: Hardy Weinberg Principle

Test: Hardy Weinberg Principle for NEET 2023 is part of Biology Class 12 preparation. The Test: Hardy Weinberg Principle questions and answers have been prepared according to the NEET exam syllabus.The Test: Hardy Weinberg Principle MCQs are made for NEET 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hardy Weinberg Principle below.
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Test: Hardy Weinberg Principle - Question 1

Which of the following is not included in natural selection?

Detailed Solution for Test: Hardy Weinberg Principle - Question 1

Natural selection mainly leads to three selections. They are: Stabilizing selection, directional selection, and disruptive selection. Technical selection does not belong to natural selection. This classification is based on different organism-environmental relationship.

Test: Hardy Weinberg Principle - Question 2

Which of the following are properties of stabilizing selection?

Detailed Solution for Test: Hardy Weinberg Principle - Question 2

Stabilizing selection operates in a constant environment. It favors the average or complex phenotype and eliminates the extreme values. The mean value never changes. Also, the peak gets higher and narrower.

Test: Hardy Weinberg Principle - Question 3

Mortality in babies is an example of ______

Detailed Solution for Test: Hardy Weinberg Principle - Question 3

Mortality in babies is an example of stabilizing selection. It is all depended on the baby’s birth weight. The optimum birth weight is 7.3 pounds which favor this selection. Newborn infants with less than 5.5 pounds and more than 10 pounds have the highest mortality rate.

Test: Hardy Weinberg Principle - Question 4

Directional selection is also known as ______

Detailed Solution for Test: Hardy Weinberg Principle - Question 4

Directional selection is also known as progressive selection. This selection always operates in a changing environment. After this natural selection, mean value always changed.

Test: Hardy Weinberg Principle - Question 5

What happens during disruptive selection?

Detailed Solution for Test: Hardy Weinberg Principle - Question 5

In disruptive selection, the members of both extreme are selected. The average gets rejected. Most of the individuals get values other than the mean character value. The naturally selected members are shown by two peaks.

Test: Hardy Weinberg Principle - Question 6

How many peaks are there in the disruptive selection?

Detailed Solution for Test: Hardy Weinberg Principle - Question 6

In disruptive selection, most of the individuals get the periphery values at both ends of the curve given in the graph. The population gets divided into two different groups. Hence, they have two peaks which resemble a two-humped camel.

Test: Hardy Weinberg Principle - Question 7

Marine mollusca is also known as _____

Detailed Solution for Test: Hardy Weinberg Principle - Question 7

Marine mollusca is also known as limpets. They are aquatic snails with a conical shaped shell with a muscular foot. They are members of the family Gastropoda. Their shell pattern shows disruptive selection.

Test: Hardy Weinberg Principle - Question 8

How does shell pattern in limpets show disruptive selection?

Detailed Solution for Test: Hardy Weinberg Principle - Question 8

Limpets shell has a continuous pattern with color ranging from pure white to dark tan. They either attached to white gooseneck barnacles or to tan colored rocks. The light-colored limpets camouflaged with white barnacles while tanned limpets camouflaged on tan-colored rocks. But, the limpets with intermediate shell patterns were conspicuous and were preyed by predatory shorebirds.

Test: Hardy Weinberg Principle - Question 9

Which of the following does not belong to the Hardy Weinberg principle?

Detailed Solution for Test: Hardy Weinberg Principle - Question 9

Allele frequencies does not vary from species to species. In a population, the frequency always remains fixed or constant according to Hardy Weinberg principle. The alleles and total genes in any population remain constant and hence stable.

Test: Hardy Weinberg Principle - Question 10

It is known that the total sum of all the frequencies of the allele is _____

Detailed Solution for Test: Hardy Weinberg Principle - Question 10

According to Hardy Weinberg principle, the total sum of all the frequencies of the allele is one. It shows that the gene pool remains the same or constant, i.e. one. Hence, it can be also termed as genetic equilibrium.

Test: Hardy Weinberg Principle - Question 11

The notation p and q of the Hardy Weinberg equation represent ________ of a diploid organism.

Detailed Solution for Test: Hardy Weinberg Principle - Question 11

Individual frequencies can be represented as p and q. But for a diploid organism, p and q explain the frequency of allele A and allele a. p2 represents AA whereas q2 represent aa.

Test: Hardy Weinberg Principle - Question 12

How many factors affect the Hardy Weinberg principle?

Detailed Solution for Test: Hardy Weinberg Principle - Question 12

Hardy Weinberg stated that there are six factors affecting this principle. They are Gene migration or gene flow, genetic drift, mutation, genetic recombination, and natural selection. Each factor plays a major role in evolution.

Test: Hardy Weinberg Principle - Question 13

Which of the following does not belong to factors affecting the Hardy Weinberg principle?

Detailed Solution for Test: Hardy Weinberg Principle - Question 13

There are six factors affecting this principle. Among the factors, the genetic drop is not included in them. They only include Gene migration or gene flow, genetic drift, mutation, genetic recombination, and natural selection.

Test: Hardy Weinberg Principle - Question 14

The process when some species migrate from the original to a new place, which in turn changes the allele frequency is called ______

Detailed Solution for Test: Hardy Weinberg Principle - Question 14

Gene migration or gene flow occurs when some species migrate from original to a new place. This changes the allele frequency in the old as well as a new place. So, new genes or alleles are being added to the new population and removed from the old one.

Test: Hardy Weinberg Principle - Question 15

Gene drift occurs when gene migration occurs ______

Detailed Solution for Test: Hardy Weinberg Principle - Question 15

Gene flow occurs when gene migration occurs many or multiple times. When this occurs by a chance, a process called gene drift occurs. It cannot occur spontaneously, slowly or due to a disaster.

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