Those Who Suspect Genetic Contributions to Sex Differences and Gender-Role

Those who suspect genetic contributions to sex differences and gender-role differentiation point to

A) the fact that males, who have but one X chromosome, are more susceptible to X-linked recessive disorders that produce developmental abnormalities
B) the fact that those who reach puberty late, on a timetable influenced by our genotypes, tend to perform better on visual/spatial tests
C) both of these
D) none of these