Some people have freckles, and some people do not have freckles. If a child has freckles, at least one parent has freckles.
However, the child may have a sibling that does not have freckles. Which statement best describes the presence of freckles?
O Freckles are not determined by DNA,
O There are two alleles for freckles.
O There is no dominant allele for freckles.
O Freckles are determined by two genes instead of by one.