Question

In humans, freckles are a trait that exhibits simple dominance. The two alleles for this trait are freckles (A) and no freckles (a). A freckled man whose mother has no freckles marries a woman with no freckles. What is the probability that their first child will have freckles? Use the Punnett square to show your work.

Answer 1

Answer:

It is Aa and aa, so that is 50%

Explanation:

This is because the chances are Aa & aa: The results look like Aa for top right and top left and aa for bottom right and bottom left.

Answer 2

Answer:

50 percent

Explanation:

Aa goes with aa

so their children's genotypes would be

Aa Aa aa and aa

so two with freckles and two without freckles which is why their first child has a 505 chance of having freckles

hope this helps :)