Article
Gender aspects of preterm birth
1 Apr 2003
Abstract excerpt
It was previously believed that sex differentiation took place when the undifferentiated gonads formed either testes or ovaries. Studies in recent years indicate that sex differentiation begins at conception. The SRY gene on the Y-chromosome is already transcribed at the 2-cell stage and triggers growth acceleration in the XY embryos. This accelerated growth is believed to be important for the male embryo as it...
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