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Given is the hypothetical pathway for purple pigment production in flowers of sweet pea:
Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb × aabb. Considering that the two genes assort independently, the phenotypes of the expected progenies are
  • a)
    9 purple : 7 white
  • b)
    3 white : 1 purple
  • c)
    3 purple : 1 white
  • d)
    9 purple : 4 light purple : 3white
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Given is the hypothetical pathway for purple pigment production in flo...
AAbb (white or colourless flower) x aaBB (white or colourless flower)
→ So. it is the case of complimentary gene interaction in which two genes A and B control the pigment colour of the flowers of sweet pea.
So. when mutation is present in one of alleles of both genes then complementation occurs and purple pigmentation is produced.

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Given is the hypothetical pathway for purple pigment production in flowers of sweet pea:Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb × aabb. Considering that the two genes assort independently, the phenotypes of the expected progenies area)9 purple : 7 whiteb)3 white : 1 purplec)3 purple : 1 whited)9 purple : 4 light purple : 3whiteCorrect answer is option 'B'. Can you explain this answer?
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Given is the hypothetical pathway for purple pigment production in flowers of sweet pea:Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb × aabb. Considering that the two genes assort independently, the phenotypes of the expected progenies area)9 purple : 7 whiteb)3 white : 1 purplec)3 purple : 1 whited)9 purple : 4 light purple : 3whiteCorrect 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 Given is the hypothetical pathway for purple pigment production in flowers of sweet pea:Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb × aabb. Considering that the two genes assort independently, the phenotypes of the expected progenies area)9 purple : 7 whiteb)3 white : 1 purplec)3 purple : 1 whited)9 purple : 4 light purple : 3whiteCorrect 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 Given is the hypothetical pathway for purple pigment production in flowers of sweet pea:Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb × aabb. Considering that the two genes assort independently, the phenotypes of the expected progenies area)9 purple : 7 whiteb)3 white : 1 purplec)3 purple : 1 whited)9 purple : 4 light purple : 3whiteCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Given is the hypothetical pathway for purple pigment production in flowers of sweet pea:Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb × aabb. Considering that the two genes assort independently, the phenotypes of the expected progenies area)9 purple : 7 whiteb)3 white : 1 purplec)3 purple : 1 whited)9 purple : 4 light purple : 3whiteCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for IIT JAM. Download more important topics, notes, lectures and mock test series for IIT JAM Exam by signing up for free.
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