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Today I learned that human sex is determined at sperm production! Didn't know that, thanks.
by hypertele-Xii 6y ago
Today I learned that human sex is determined at sperm production! Didn't know that, thanks.
- KMag 6y agoAlso, the Y chromosome has slightly lower mass, and so the male sperm swim slightly faster. I would suspect, though I haven't seen any studies, that some fertility treatment steps unintentionally have mass-sorting properties similar to the barrier diffusion Uranium enrichment technique used in the Manhattan Project.