Suppose "A" is a dominant gene and "a" is a recessive gene. One parent has genes Aa and the other parent has genes aa. What genes will the children probably have?

Suppose "A" is a dominant gene and "a" is a recessive gene. One parent has genes Aa and the other parent has genes aa. What genes will the children probably have?

a. All will be AA.
b. All will be aa.
c. Three-fourths will be Aa, one-fourth aa.
d. Half will be Aa, half aa.