TY - CHAP M1 - Book, Section TI - The Female Genitalia and Reproductive System A1 - LeBlond, Richard F. A1 - Brown, Donald D. A1 - Suneja, Manish A1 - Szot, Joseph F. Y1 - 2015 N1 - T2 - DeGowin’s Diagnostic Examination, 10e AB - Male and female external genitalia, arising from identical embryologic anlage, differentiate depending on the presence or absence of testosterone. Lack of the SRY gene (typically found on the Y chromosome) leads to development of ovaries, with subsequent maturation of female sex organs. The labia majora is a cognate of the scrotum and the clitoris and penis are similarly derived. Ambiguous genitalia occur when development and maturation occurs with a mixed genetic substrate or hormonal environment. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1139369343 ER -