Exotics Rodents / Biomed Research Article Practice Test

Anogenital distance is longer in males because fetal exposure to androgens, especially testosterone, drives male-typical development of external genitalia. This creates a sexually dimorphic pattern where the distance from the anus to the genitalia is greater in males than in females. Therefore, the statement that females have a longer AGD is not correct; the opposite is true. AGD is sometimes used as a biomarker of prenatal androgen exposure, reflecting this fundamental difference in development.