another of life's little curiosities: aka paternal mitochondria elimination(PME): Sperm has its own mitochondria It seems that should it be quick and lucky enough to find and enter an egg via cps6 (which it also carries) the paternal(male) mitochondria will be eliminated should the paternal cps6 be defective, missing, or insufficient to eliminate the male mitochondria(usually before the 64 cell stage), the female(maternal) provided cps6 will attempt the job of paternal mitochondria elimination should that fail the woman's body will just reject the egg and try again next month with me so far? accurate? ok (here's the question) Why? ...................................... and why does a woman's body refuse to carry a zygote with paternal mitochondria? would we have evolved differently if that was different?