NEET Exam > NEET Questions > A tobacco plant heterozygous for a recessive ...
Start Learning for Free
A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?
- a)1250
- b)600
- c)300
- d)2250
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A tobacco plant heterozygous for a recessive character is self-pollina...
Given information:
- A tobacco plant is heterozygous for a recessive character.
- The plant is self-pollinated.
- 1200 seeds are germinated.
To solve the problem, we need to use the principles of Mendelian genetics and Punnett squares.
Step-by-step solution:
1. Write down the genotype of the parent plant:
- Let's use A to represent the dominant allele and a to represent the recessive allele. The parent plant is heterozygous, so its genotype is Aa.
2. Create a Punnett square to show the possible gametes and offspring:
| | A | a |
|----|---|---|
| A | AA | Aa |
| a | aA | aa |
- Each box represents a possible offspring genotype that can result from the combination of the parent's gametes.
- The probability of each genotype occurring can be calculated by multiplying the probabilities of the corresponding gametes.
3. Determine the probability of each genotype:
- In this case, we want to know the probability of the parental genotype (Aa) occurring.
- We can see from the Punnett square that there are two Aa offspring genotypes out of four possible genotypes, so the probability is 2/4 or 1/2.
4. Calculate the number of offspring with the parental genotype:
- We know that there are 1200 seeds germinated, so we can use the probability we calculated in step 3 to find the expected number of Aa offspring.
- Expected number of Aa offspring = probability of Aa genotype x total number of offspring
- Expected number of Aa offspring = 1/2 x 1200 = 600
5. Choose the correct answer:
- The question asks how many seedlings would have the parental genotype, which is Aa.
- From step 4, we know that the expected number of Aa offspring is 600. Therefore, the correct answer is B, 600.
- A tobacco plant is heterozygous for a recessive character.
- The plant is self-pollinated.
- 1200 seeds are germinated.
To solve the problem, we need to use the principles of Mendelian genetics and Punnett squares.
Step-by-step solution:
1. Write down the genotype of the parent plant:
- Let's use A to represent the dominant allele and a to represent the recessive allele. The parent plant is heterozygous, so its genotype is Aa.
2. Create a Punnett square to show the possible gametes and offspring:
| | A | a |
|----|---|---|
| A | AA | Aa |
| a | aA | aa |
- Each box represents a possible offspring genotype that can result from the combination of the parent's gametes.
- The probability of each genotype occurring can be calculated by multiplying the probabilities of the corresponding gametes.
3. Determine the probability of each genotype:
- In this case, we want to know the probability of the parental genotype (Aa) occurring.
- We can see from the Punnett square that there are two Aa offspring genotypes out of four possible genotypes, so the probability is 2/4 or 1/2.
4. Calculate the number of offspring with the parental genotype:
- We know that there are 1200 seeds germinated, so we can use the probability we calculated in step 3 to find the expected number of Aa offspring.
- Expected number of Aa offspring = probability of Aa genotype x total number of offspring
- Expected number of Aa offspring = 1/2 x 1200 = 600
5. Choose the correct answer:
- The question asks how many seedlings would have the parental genotype, which is Aa.
- From step 4, we know that the expected number of Aa offspring is 600. Therefore, the correct answer is B, 600.
Free Test
FREE
| Start Free Test |
Community Answer
A tobacco plant heterozygous for a recessive character is self-pollina...
1250
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
Question Description
A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer?.
A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer?.
Solutions for A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer?, a detailed solution for A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A tobacco plant heterozygous for a recessive character is self-pollinated and 1200 seeds are subsequently germinated. Flow many seedlings would have the parental genotype?a)1250b)600c)300d)2250Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup