 In males, the secretion of ‘Anti-Mullerian Hormone (AMH)’ causes the regression of the Müllerian Duct.Normally, both the Mullerian and Wolffian ducts are present during the 7th week of gestation.Approximately by the end of the 7th and beginning of the 8th week of gestation, the Sertoli cell's secretion of AMH occur, causing the male sex differentiation during foetal development.