Q. 104.0( 4 Votes )

In the previous question, what are the combinations of character in the F2 progeny? What are their ratios?

Answer :

A dihybrid cross shows inheritance of two different traits simultaneously. A cross between two dihybrid dominant recessive parents, gives phenotypic ratio 9:3:3:1 in progeny. All progeny in this cross will exhibit round yellow (RRYY), Round yellow (RrYy), Round green (RRyy), Round green (Rryy), wrinkled yellow (rrYY), wrinkled yellow (rrYy), wrinkled green (rryy).

This can be shown by following Punette Square:

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Lakhmir Singh & Manjit Kaur- Biology