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Pigmentation in moth is maternally affected where a+ is the allele for pigmentation. A mother with genotype a+ /a and a father with genotype aa will produce a progeny which is
  • a)
    All unpigmented at the larval stage
  • b)
    All pigmented at the larval stage
  • c)
    Half of the larvae are pigmented at the larval stage
  • d)
    Three-fourths of the larvae are pigmented at the larval stage
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Pigmentation in moth is maternally affected where a+ is the allele for...
Pigmentation in moth is the example of the maternal effect in which the cytoplasm and genotype of the mother affect the phenotype of the progeny as mother genotype is a+/a that’s why all the progenies will be pigmented at larval stages
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Pigmentation in moth is maternally affected where a+ is the allele for...
Explanation:
Pigmentation in moths is maternally affected, which means that the pigmentation of the offspring is determined by the genotype of the mother. In this case, the mother has a genotype of a/a, meaning that she is unpigmented.

Genotypes:
- Mother: a/a
- Father: aa

Genetic Cross:
When we cross the mother (a/a) with the father (aa), we get the following possibilities for the progeny:

- Offspring 1: a/a (unpigmented)
- Offspring 2: a/a (unpigmented)
- Offspring 3: a/a (unpigmented)
- Offspring 4: a/a (unpigmented)

Explanation:
Since pigmentation in moths is maternally affected, the genotype of the mother (a/a) determines the pigmentation of the offspring. In this case, all the offspring will have the genotype a/a, which means they will all be unpigmented at the larval stage.

Therefore, the correct answer is option B: All pigmented at the larval stage.

Key Points:
- Pigmentation in moths is maternally affected.
- The genotype of the mother determines the pigmentation of the offspring.
- The mother has a genotype of a/a, meaning she is unpigmented.
- The father has a genotype of aa, meaning he is pigmented.
- When the mother (a/a) is crossed with the father (aa), all the offspring will have the genotype a/a and be unpigmented at the larval stage.
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Pigmentation in moth is maternally affected where a+ is the allele for pigmentation. A mother with genotype a+ /a and a father with genotype aa will produce a progeny which isa)All unpigmented at the larval stageb)All pigmented at the larval stagec)Half of the larvae are pigmented at the larval staged)Three-fourths of the larvae are pigmented at the larval stageCorrect answer is option 'B'. Can you explain this answer?
Question Description
Pigmentation in moth is maternally affected where a+ is the allele for pigmentation. A mother with genotype a+ /a and a father with genotype aa will produce a progeny which isa)All unpigmented at the larval stageb)All pigmented at the larval stagec)Half of the larvae are pigmented at the larval staged)Three-fourths of the larvae are pigmented at the larval stageCorrect 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 Pigmentation in moth is maternally affected where a+ is the allele for pigmentation. A mother with genotype a+ /a and a father with genotype aa will produce a progeny which isa)All unpigmented at the larval stageb)All pigmented at the larval stagec)Half of the larvae are pigmented at the larval staged)Three-fourths of the larvae are pigmented at the larval stageCorrect 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 Pigmentation in moth is maternally affected where a+ is the allele for pigmentation. A mother with genotype a+ /a and a father with genotype aa will produce a progeny which isa)All unpigmented at the larval stageb)All pigmented at the larval stagec)Half of the larvae are pigmented at the larval staged)Three-fourths of the larvae are pigmented at the larval stageCorrect answer is option 'B'. Can you explain this answer?.
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