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A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratio 
  • a)
    1Black : 2Brown: 2 Yellow
  • b)
    1Black: 2Yellow: 1Brown   
  • c)
    1Brown: 1Brown
  • d)
    1Black : 1 Yellow : 1Brown
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A black mouse homozygous for the dominant alleles (AABB) is crossed wi...
9:3 :4 ratio depicts that it is the case of recessive epistasis interaction.
Gene Ac an modify the yellow precursor into brown.
Gene B can modify the brown colour into black.

Tliat means gene A is in homozygous recessive epistatic state over gene B.

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A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer?
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A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer?.
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Here you can find the meaning of A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A black mouse homozygous for the dominant alleles (AABB) is crossed with a yellow mouse that is homozygous recessive for the alleles (aabb). On intercrossing the F1 the F2 progeny was obtained in the following ratio: 9 Black: 3 Brown: 4 yellow: The progeny from the cross AaBb aabb are in the ratioa)1Black : 2Brown: 2 Yellowb)1Black: 2Yellow: 1Brownc)1Brown: 1Brownd)1Black : 1 Yellow : 1BrownCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice IIT JAM tests.
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