TY - CHAP M1 - Book, Section TI - The Male Genitalia and Reproductive System A1 - Suneja, Manish A1 - Szot, Joseph F. A1 - LeBlond, Richard F. A1 - Brown, Donald D. PY - 2020 T2 - DeGowin’s Diagnostic Examination, 11e AB - The same embryologic anlage produces female or male external genitalia depending on the level of testosterone. The SRY gene (typically found on the Y chromosome) leads to testicular development, with masculinization of the reproductive tract. When this gene is absent, ovaries develop with subsequent maturation of female sex organs. The scrotum and penis are cognates of the labia majora and clitoris, respectively. Ambiguous genitalia are the result of development and maturation with a mixed genetic substrate or hormonal environment. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1189114897 ER -