Se the Punnett square below to answer the question that follows. This Punnett square shows heritability in a family for disease A. Everyone has two copies of the gene that determines whether they have the disease.

A completed Punnett square. A 3-column table with 4 rows. Column 1 is unlabeled with entries Child 1, Child 2, Child 3, Child 4. Column 2 is labeled Mom uppercase A lowercase a with entries lowercase a uppercase A, uppercase A, lowercase a. Column 3 is labeled Dad uppercase A lowercase a with entries lowercase a, lowercase a, uppercase A, lowercase a.

Now suppose disease A is recessive. The gene for not having the disease is shown with a capital A, and the gene for having the disease is shown with a lowercase a. Which of the following now have the disease? Check all that apply.

both Mom and Dad

child 1

child 2

child 3

child 4