A recessive trait is one where the individual must have two
recessive alleles for the phenotype of the trait to be visible. The
recessive trait can be carried from generation to generation
through heterozygous individuals. A person who is heterozygous for
a harmful or deleterious trait is said to be a “carrier” of the
trait.

If an individual receives 2 recessive alleles for a harmful or
deleterious trait, let us say for our problem below, they will have
the “illness”.

Solve the problem of the parents provided below. Perform the
Punnett Square and answer the questions below.

Mom and Dad are both heterozygous for the harmful or deleterious
recessive trait.

What is the probability of their offspring having the illness?
____________%

What is the probability of their offspring being a “carrier”?
_____________%