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Post by RedRuth1966 on Jan 12, 2018 10:04:40 GMT
In a sense all adaptations are "accidental" and "unintentional" according to evolution theory (random variation + natural selection). But here's a case where a somewhat harmful mutation has a beneficial side effect. How sickle-cell carriers fend off malariaYou've got it the wrong way round. It's a beneficial mutation when it's heterozygous (you carry one allele with it), that's why it persists in the population. The 'unintended' part is that it's disease causing if you're unfortunate enough to be homozygous |
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