Question

what is the probability that a female offspring of the cross that is shown above would have a recessive allele for duchenne muscular dystrophy disorder? 0 percent 25 percent 50 percent 100 percent

Explanation:

Step1: Identify female genotypes

Female genotypes are determined by two X - chromosomes. In the Punnett - square, female genotypes are formed by combinations of X - chromosomes from parents. Female offspring genotypes here are $X^{M}X^{m}$ and $X^{m}X^{m}$.

Step2: Determine recessive - allele presence

The recessive allele for Duchenne muscular dystrophy is $X^{m}$. All female offspring have at least one $X^{m}$ allele.

Answer:

100 percent