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NEET2006ZoologyPrinciples of Inheritance and VariationActual

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 F ₂ generation the cross RRYY rryy?

Options

  1. Around seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons
  2. Bonly round seeds with green cotyledons
  3. Conly wrinkled seeds with yellow cotyledons
  4. Donly wrinkled seeds with green cotyledons

Correct answer

A. round seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons

Step-by-step solution

When a cross (dihybrid) is made between plants bearing round yellow (RRYY) and wrinkled green (rryy) seeds, all the plants in F ₁ . (Ref. to Fig. 26.1)

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