Killer Worm Sperm Stops Different Species From Breeding
According to a classic definition of species , two animals belong to to the same species if they can make babies that can finally go on to make their own . Sometimes different species get it on and produce offspring , but hybrids like mules are almost always sterile because of genomic inconsistency . And then there ’s the gruesome case of killer nematode sperm cell , which crawl through the physical structure of females from a dissimilar metal money , destroying ovaries and murder tissue paper ....