Question

The gene for earlobe shape has two alleles; detached (A) and attached (a).

What is the percent probability that one child of a mother with the genotype Aa and a father with the genotype Aa will have attached earlobes? Use a Punnett Square to figure out the likelihood.
A. 0%
B. 25%
C. 50%
D. 75%

Answer 1

The answer will be B:25%

Answer 2

B. 25%

Step-by-step explanation:

In a Punnett Square, a child with two recessive genes always has a 1/4 probability of being born.