A particularly interesting quote made on the hills of the discovery of a shark's ability to self-impregnate;
He also argued that the power to self-impregnate represents "an evolutionary strategy to keep the population and species going when all else fails. Genetically, it's a last resort tactic because it leads to genetic uniformity, and eventually that will catch up with the population and make it less fit.
"But as a short-term alternative to extinction, it has its benefits," he said.
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