Question

A cross between the two parents results in 50 offspring. How many of the offspring are most likely to have the dominant trait?

A) 12
B) 25
C) 30
D) 38

Answer 1

The answer will be D. 38

Answer 2

As you see on the table, there are 3 ways the offspring can get the dominant trait. RR, Rr, and rR (order was switched for clarification). There are 4 total outcomes. In this case, the problem can just be treated as a probability question.

3 out of 4, or 3/4 * 50 is 37.5, which can be rounded to D. 38.