We are so used to associating the ideas of sex and reproduction that it is easy to forget that, at a deep level, these two processes are precise opposites. Reproduction is the process in which one cell turns into two, and sex that in which two cells fuse to form one. Darwin has taught us to expect organisms to have properties that ensure successful survival and reproduction. Why, then, should they bother with sex, which interrupts reproduction?
KeywordsChromosome Number Elephant Seal Hybrid Vigour Sexual Population Sexual Species
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