Question

The trait for a dimples (D) is dominant over the trait for no dimples (d). Two people with dimples (Dd x Dd)

got married. Complete the diagram below to show the genes of their children. What percentage of the
offspring will most likely have no dimples?
0%
25%
50%
75%

Answer 1

25%

Explanation:

Here is my punnett square:

D d <---parent 1

D DD Dd

d Dd dd

^

|

| parent 2

The results: DD, Dd, Dd, dd

DD, Dd: will have dimples because they have a dominant allele in their genotype. So in their phenotype, they will have dimples.

dd: will not have dimples because they do not have the dominant allele for dimples in their genotype. So in their phenotype, they will NOT have dimples.

3 cases (25% chance for DD, 50% chance for Dd, 25% chance for dd)

1/4 is DD is 25%

2/4 is Dd is 50%

and 1/4 is dd is 25%

answer: 25%

Have a nice day!