someone might know about this:
Is it possible, that genetic engineering would make it such that sperm from an unmodified person is unable to naturally fertilise a modified person's egg? or modified sperm unable to fertilise unmodified eggs.
I do not know much about the mechanisms, but isn't there a lot of stuff involving proteins and so on that surround the egg, that only lets 1 sperm in?
Could that protein be altered by engineering, intentionally or otherwise?
What about immune response to sperm?
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