Assume that in pea plants yellow and smooth are dominant and

Assume that in pea plants yellow and smooth are dominant and unlinked traits. If a green, homozygous smooth plant is mated with a plant that is heterozygous for both traits, what fraction of the offspring can be expected to be both yellow and smooth?

Question 20 options:

1/8

1/4

1/2

All offspring will be yellow and smooth

Solution

Probability of having both yellow and smooth is 1/4. Gametes could be Gg-green heterozygous, gg-yellow., SS- smooth, Ss- smooth.

GgxSs-----}GgSs--->1/2x1/2=1/4