Which of the following is true of the genetic cross shown in the figure below?

Question

Quizplus · Accepted Answer

Based on the Punnett square shown in the figure, we can see that the parents are both carriers (heterozygous) for the recessive disorder. Therefore, each of their offspring has a 25 percent chance of inheriting two copies of the mutant allele and having the disorder, a 50 percent chance of inheriting one copy of the mutant allele and being a carrier, and a 25 percent chance of inheriting two normal alleles and not having the disorder. Since the disorder is X-linked, it primarily affects males. A carrier female has one normal X chromosome and one X chromosome with the mutant allele. When she has children, each child has a 50 percent chance of inheriting the normal X chromosome and a 50 percent chance of inheriting the X chromosome with the mutant allele. Therefore, their daughters have a 50 percent chance of being carriers, and their sons have a 50 percent chance of inheriting the X chromosome with the mutant allele and having the disorder.

Which of the Following Is True of the Genetic Cross