Use 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
Suppose disease A is dominant. The gene for
having the disease is shown with a capital A, and
the gene for not having it is shown with a
lowercase a. Which of the following have the gene
that carries the disease? Check all that apply
both Mom and Dad
MOM
Аа
DAD
Аа
child 1
child 2
CHILD 1
a
a
child 3
CHILD 2
A
a
child 4
CHILD 3
A
А
DONE
CHILD 4
a
a