Question

charles (x^h y), marie (x^h x^h), their child (purple square, ?). what is the probability that a female child of charles and marie would suffer from hemophilia? options: 0 percent, 25 percent, 50 percent, 100 percent. save and exit

Explanation:

Hemophilia is X - linked recessive. Charles has \(X^{H}Y\) (normal), Marie has \(X^{H}X^{h}\) (carrier). Female children get \(X^{H}\) from Charles and either \(X^{H}\) or \(X^{h}\) from Marie. Genotypes: \(X^{H}X^{H}\) (normal) or \(X^{H}X^{h}\) (carrier, not affected). So 0% chance of suffering.

Answer:

0 percent