Question

round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. what is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross rryy × rryy?
○ 0 percent
○ 25 percent
○ 50 percent
○ 100 percent

Explanation:

Step1: Analyze Seed Shape Genetics

The first parent is RRYy, so for seed shape (R/r), it can only pass on R alleles. The second parent is RrYy, but when crossing with RRYy for seed shape, all offspring will get R from the first parent. Since wrinkled seeds are recessive (rr), and we can't get rr (as one R is always from the first parent), the probability of wrinkled seeds (rr) is 0.

Step2: Confirm Seed Color (But Shape Determines)

Even though seed color could be yellow (dominant), the seed shape (wrinkled, rr) can't occur here. So the probability of offspring with wrinkled seeds (rr) and yellow color is 0.

Answer:

0 percent