de'terminisme du sexe

ABSTRACT

Sex determinism is the series of mechanisms that make an undifferentiated gonad start the process that will lead to testicular or ovarian development. It consists of a very complex cascade sequence that necessitates the interaction of several genes. We review in this work this cascade sequence with in particular the SRY gene which the primary signal that will trigger the formation of the testis. The role of several other genes in sex determination has been also demonstrated and is reviewed such as DSS, WTI, SFI, SOX9,. although their made and sequence of the action in the cascade are still being investgated