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ral clones are particularly relevant as an era begins in which the artificial cloning of mammals, and potentially humans, is no longer a fantasy. To an evolutionary biologist, sex is meiotic recombination and outcrossing, which together create genetically diverse offspring that interact uniquely with the environment in each new generation. Meiotic sex originated in our single-celled protist ancestors, and except for the evolution of distinct male and female gametes (i.e., small motile sperm Studies of animal clones
Robert C. Vrijenhoek (Sat,) studied this question.