Grain colour in wheat is determined by three pairs of polygene. Following the cross ${\rm{AABBCC}}\left( {{\rm{dark colour}}} \right) \times {\rm{aabbcc}}\left( {{\rm{light colour}}} \right)$ , in ${F_2}$generation. What proportion of the progeny is likely to resemble either parent?

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NEET UG BIOLOGY MCQ: PRINCIPLE OF INHERITANCE AND VARIATION

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Grain colour in wheat is determined by three pairs of polygene. Following the cross

\mathrm{AABBCC}\left( {\mathrm{dark colour}} \right) \times \mathrm{aabbcc}\left( {\mathrm{light colour}} \right)

, in

{F_2}

generation. What proportion of the progeny is likely to resemble either parent?

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Correct option: B

Less than 5 per cent

The correct answer is B (Less than 5 per cent) because in polygenic inheritance with multiple genes, the proportion of progeny resembling either extreme parental type is very low in the F2 generation.

NEET UG BIOLOGY MCQ: PRINCIPLE OF INHERITANCE AND VARIATION

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