Genes involved in sexual differentiation: WT-1, Wilms’ tumor 1; SF-1, steroidogenic factor 1; LHX1, LIM homeobox 1; LHX9, LIM homeobox 9; DMRT1 and -3, doublesex and Mab3-related transcription factors 1 and 3 (located on chromosome 9p24); SRY, sex-determining region of Y chromosome; SOX9, SRY-box-related 9; DAX1, dosage-sensitive sex reversal locus-adrenal hypoplasia congenita-critical region on the X, gene 1; WNT-4, wingless-type MMTV integration site family, member 4 (member of Wnt family of locally secreted growth factors); RSPO, R-spondins; FST, follistatin; BMP2, bone morphogenetic protein 2; GATA-4, GATA-binding protein 4 (codes for a zinc finger transcription factor); AR, androgen receptor; AMH-R, anti-Mullerian hormone receptor.