NEET Exam > NEET Questions > Can you explain the answer of this question b...
Start Learning for Free
Can you explain the answer of this question below:
The phenotypic ratio in the F2 generation of a dihybrid cross is
- A:1:2:2:4:1:2:1:2:1
- B:9:3:3:1
- C:7:1:1:7
- D:12:3:4
The answer is b.
Most Upvoted Answer
Can you explain the answer of this question below:The phenotypic ratio...
Explanation:
In a dihybrid cross, two traits are considered simultaneously. The F1 generation produced after crossing two pure breeding lines will all be heterozygous for both traits.
For example, if two pure breeding plants with yellow round seeds (YYRR) are crossed with plants with green wrinkled seeds (yyrr), the F1 generation will all be heterozygous for both traits (YyRr).
When the F1 generation is crossed with itself or another F1 individual, the resulting F2 generation will exhibit all possible combinations of the two traits.
The phenotypic ratio in the F2 generation of a dihybrid cross is determined by the number of possible combinations of the two traits.
The possible combinations of the two traits can be determined using a Punnett square or the FOIL method.
For example, using the FOIL method:
(YyRr) x (YyRr)
YYRr YyRR YyRr yyRR
YYRr YyRR YyRr yyRR
YyRr yyRR YyRr yyrr
yyRR yyRR yyrr yyrr
In this example, there are 9 individuals with both dominant traits (yellow and round seeds), 3 individuals with one dominant and one recessive trait (yellow and wrinkled seeds, green and round seeds), and 1 individual with both recessive traits (green and wrinkled seeds).
Therefore, the phenotypic ratio in the F2 generation of this dihybrid cross is 9:3:3:1, which is option B.
In a dihybrid cross, two traits are considered simultaneously. The F1 generation produced after crossing two pure breeding lines will all be heterozygous for both traits.
For example, if two pure breeding plants with yellow round seeds (YYRR) are crossed with plants with green wrinkled seeds (yyrr), the F1 generation will all be heterozygous for both traits (YyRr).
When the F1 generation is crossed with itself or another F1 individual, the resulting F2 generation will exhibit all possible combinations of the two traits.
The phenotypic ratio in the F2 generation of a dihybrid cross is determined by the number of possible combinations of the two traits.
The possible combinations of the two traits can be determined using a Punnett square or the FOIL method.
For example, using the FOIL method:
(YyRr) x (YyRr)
YYRr YyRR YyRr yyRR
YYRr YyRR YyRr yyRR
YyRr yyRR YyRr yyrr
yyRR yyRR yyrr yyrr
In this example, there are 9 individuals with both dominant traits (yellow and round seeds), 3 individuals with one dominant and one recessive trait (yellow and wrinkled seeds, green and round seeds), and 1 individual with both recessive traits (green and wrinkled seeds).
Therefore, the phenotypic ratio in the F2 generation of this dihybrid cross is 9:3:3:1, which is option B.
Free Test
FREE
| Start Free Test |
Community Answer
Can you explain the answer of this question below:The phenotypic ratio...
Because it produces produced nine plants with round, yellow seeds, three plants with round, green seeds, three plants with wrinkled, yellow seeds and one plant with wrinkled, green seeds.therefore the ratio is 9:3:3:1
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
Question Description
Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b..
Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b..
Solutions for Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. 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 Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. defined & explained in the simplest way possible. Besides giving the explanation of
Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b., a detailed solution for Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. has been provided alongside types of Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. theory, EduRev gives you an
ample number of questions to practice Can you explain the answer of this question below:The phenotypic ratio in the F2generation of a dihybrid cross isA:1:2:2:4:1:2:1:2:1B:9:3:3:1C:7:1:1:7D:12:3:4The answer is b. 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 on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily