According to McGee's hypothesis, if superior abilities are heritable through a recessive gene located on the X chromosome, then ______ percent of the female population should show above average abilities.
A) 25
B) 33
C) 75
D) 50

Question

Quizplus · Accepted Answer

For a female to express a trait that is recessive and located on the X chromosome, she must inherit two copies of the recessive gene, one from each parent. Since females have two X chromosomes, the probability of inheriting the recessive gene from both parents is 0.5 * 0.5 = 0.25 or 25%.

According to McGee's Hypothesis, If Superior Abilities Are Heritable Through