ChindianEugenicist
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Trivers–Willard hypothesis - Wikipedia
en.wikipedia.org
Trivers–Willard hypothesis - Wikipedia
The Trivers-Willard hypothesis (TWH), proposed by Robert Trivers and Dan Willard in 1973, suggests that female mammals can bias the sex ratio of their offspring depending on maternal condition, thereby enhancing their evolutionary fitness (reproductive success) (Wikipedia). In essence, parents in good condition are more likely to produce and invest in male offspring, while parents in poor condition are more likely to produce and invest in female offspring.
Basically, if you have daughters, you're guaranteed to have grandchildren unless she's a feminist landwhale. Meanwhile, for every Chad with a harem, there are far more incel men who never reproduce.The hypothesis is based on the principle that male reproductive success is more variable than female reproductive success. High-condition males can mate with multiple females and produce many offspring, whereas low-condition males may fail to reproduce at all. In contrast, females generally have more stable reproductive success regardless of condition. Therefore, parents in good condition can maximize fitness by producing sons who may achieve high reproductive success, while parents in poor condition are better off producing daughters who are more likely to reproduce successfully (Open Textbook; Springer Nature).
The hypothesis is focused on non-human mammals, but similar behavior has been observed in humans:
In Tight Money Times, Parents Favor Daughters Over Sons
A Rutgers researcher finds some financial choices are driven by a primal urge to be a grandparent.





