When the sheep embryo was on 41d, it can be distinguished female or male in external appearance. The female gonad appears the ovary preliminary characteristics.
结果：绵羊胚胎发育到41天时，可以从外观上分辨雌雄，雌性性腺初步出现卵巢的特征；
2
If SRY is missing, the gonad develops into an ovary, even if the embryo is male.
如果SRY基因缺失，即使胚胎是男性的，其性腺也会发育成卵巢。
3
The results showed that the function of pituitary-gonad axis decreased in the adrenalectomized male rats.