Differences in right- and left-handed fingerprint ridges are greater for heterosexual males than for gay males. Researchers have attributed this to

Question

Quizplus · Accepted Answer

The difference in right- and left-handed fingerprint ridges being greater in heterosexual males than in gay males is likely due to prenatal hormone exposure. Testosterone exposure in the womb has been linked to both hand preference and sexual orientation, and may also affect the development of fingerprint patterns. The other options (erotic plasticity, refractory periods, and ostracism) are not directly related to fingerprint ridge differences.

Differences in Right- and Left-Handed Fingerprint Ridges Are Greater for Heterosexual