Question

In the pea garden, Mendel found that yellow seed color was dominant to green (A>a) and round seed shape was dominant to shrunken (R>r). a) What phenotypic ratio would be expected in the F2 from a cross of a pure yellow, round x green, shrunken

Answer 1

The correct answer is - 9:3:3:1

Step-by-step explanation:

A cross between pure yellow round seeds(AARR) to another pure green shrunken seeds (aarr). In the F1 generation, all offsprings are heterozygous yellow round(YyrRr).

Now this heterozygous self-pollination, in the F2 generation, 9 plants are Yellow round, 3 plants are yellow shrunken, 3 plants are green round and 1 plant is green wrinkled are formed.

YR Yr yR yr

YR YYRR YYRr YyRR YyRr