Question

consider the couple shown here. what can you say about their children in the second row of the family tree? select all that apply. a. half the males have a color color vision deficiency b. all the females are carriers for color vision deficiency c. half the females are not carriers for color vision deficiency d. half of the females are carriers for color vision deficiency e. half the males are do not have a color vision deficiency

Explanation:

• For males: The male children have genotypes \(X^{B}Y\) and \(X^{b}Y\). So, half of the males (\(X^{b}Y\)) have color - vision deficiency and half (\(X^{B}Y\)) do not.
• For females: The female children have genotypes \(X^{B}X^{B}\) and \(X^{B}X^{b}\). So, half of the females (\(X^{B}X^{b}\)) are carriers and half (\(X^{B}X^{B}\)) are not carriers.

Answer:

C. Half the females are not carriers for color vision deficiency; D. Half of the females are carriers for color vision deficiency; E. Half the males do not have a color vision deficiency.