do babies really eat their twin in the womb? if so, why does that happen?
In: Biology
In addition to what /u/Darth_Mufasa said, sometimes two embryos can stick together and merge into one. Depending on what stage of development this happens at, the result may be conjoined twins, or a single outwardly normal looking “chimera” who looks like one person but contains cells with both their and their siblings’ DNA.
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