AIPMT PRELIMS2006Botany-Genetics

AIPMT PRELIMS 2006 Botany Mendelian Inheritance MCQ Question

Type: MCQ-conceptual-Medium-Class 12

In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F₂ generation of the cross RRY Y × rry y?

A

Only round seeds with green cotyledons

B

Only wrinkled seeds with yellow cotyledons

C

Only wrinkled seeds with green cotyledons

D

Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons

Correct Answer

Option D

Detailed Explanation

In the F₂ generation, the expected phenotypes are round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons due to the dominance of round shape and yellow cotyledon.

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