Normally, polyspermy is not viable. Can there be freak cases where it is? I'm imagining some chromosomes of one sperm and other chromosomes of another sperm pair up with the chromosomes of the egg.
In the entire family tree of the human race, is there a child with three biological parents? Along with viable polyspermy above, the mother needs to have had sex with two males in a short time span. (What species other than humans engage in orgies?)
Are their any living descendents of such a child? Can this be discovered by clever genome analysis of the current generation?
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