@elenoftheways "Surely this is the pertinent sentence here?"
If I felt that was the only pertinent sentence I'd have only pasted that sentence. I didn't, because as you can read quite clearly it says "Without hormones like testosterone, you would stay on the path to womanhood." which supports my earlier comment that the male sex hormone influences the development of the foetus.
I really don't think the fact that testosterone influences development is open to debate, but maybe my phrasing was off. I mean you only have to look at how female bodybuilders on steroids develop enlarged clitoris
Some more reading:
“Mammals don’t start as females, they start as a blank slate with XX/XY genetic code, and for the first 5-6 weeks of gestation only the X gene expresses. Then when the Y gene starts expressing (in genetic XY-males), it releases androgens like testosterone, represses some X gene expression (and estrogen development), and expresses specific Y genes. This process is called sexual differentiation and it leads to what we call male and female” factmyth.com/factoids/all-mammals-start-as-female/
So the sex is determined at conception, but the foetus still starts developing as a female, until the male hormones kick in
“"In fact, the first five to six weeks of embryonic development are attributed to the X chromosome alone, and females grow from embryo to fully developed through the influence of only the X chromosome," www.sciencealert.com/watch-we-were-once-all-female