Scientists made mice with Y chromosomes female by deleting just 6 tiny molecules | Live Science
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Scientists discovered that removing specific molecules from developing mice can completely reverse their sex from male to female.
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Former researcher here: It’s trivial to select for sex in embryos.
So you can take an embryo that is in a uterus and change that embryos sex?
I feel like that’s what they are talking about, not picking out of a cluster of them.
I’m genuinely interested
There has been gender selection for ivf for over a decade now. The sperm can be separated by X or Y and only one can be used to fertilize the eggs.