சிறப்பு குரோமோசோம்களே பாலினத்தைத் தீர்மானிக்கும்.
Excerpt of 1906 letter from W. Spillman to the American Breeders Association. The letter summarizes "recent" discoveries in genetics. Boxed text talks about Wilson's work on sex determination.
Nettie Maria Stevens, 1904.
Nettie Stevens at work in Naples, Italy, 1909.
Edmund Beecher Wilson, 1925.
Edmund Beecher Wilson, signed, 1925.
Historically, and in many cultures even now, women are blamed for not having sons. This is unreasonable since the sex of the child is determined by the father not the mother.
It is possible to have XXX or X females and XXY males. But there is no case of a living Y male. Why not?
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Excerpt of 1906 letter from W. Spillman to the American Breeders Association. The letter summarizes "recent" discoveries in genetics. Boxed text talks about Wilson's work on sex determination.