The Evolution of Imperfection: The Science of Why We Aren’t and Can’t Be Perfect
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简介
书名：The Evolution of Imperfection: The Science of Why We Aren’t and Can’t Be Perfect
作者：Laurence D. Hurst
简介：How understanding our genetic imperfections can change our view of evolution and enrich what it means to be human
If we start with the presumption that evolution is a constantly improving process, some aspects of our evolution just do not make sense. We have a high rate of genetic diseases, for example, and much of our DNA seems to be pointless. In The Evolution of Imperfection, Laurence Hurst explores our apparently rotten genetic luck.
Hurst, a leading authority on evolution and genetics, argues that our evolutionary imperfections proceed directly from two the difficulties of pregnancy and the fact that historically there are relatively few of us. In pregnancy, natural selection can favor chromosomes that kill embryos in species (including ours) that continuously receive resources from the mother. Most fertilized eggs don’t make it, and incompatibilities between the fetus and mother can lead to lethal disorders of pregnancy. The historically small population size enhances the role of chance, which in turn leads to both accumulation of unnecessary DNA and more mutation.
作者：Laurence D. Hurst
简介：How understanding our genetic imperfections can change our view of evolution and enrich what it means to be human
If we start with the presumption that evolution is a constantly improving process, some aspects of our evolution just do not make sense. We have a high rate of genetic diseases, for example, and much of our DNA seems to be pointless. In The Evolution of Imperfection, Laurence Hurst explores our apparently rotten genetic luck.
Hurst, a leading authority on evolution and genetics, argues that our evolutionary imperfections proceed directly from two the difficulties of pregnancy and the fact that historically there are relatively few of us. In pregnancy, natural selection can favor chromosomes that kill embryos in species (including ours) that continuously receive resources from the mother. Most fertilized eggs don’t make it, and incompatibilities between the fetus and mother can lead to lethal disorders of pregnancy. The historically small population size enhances the role of chance, which in turn leads to both accumulation of unnecessary DNA and more mutation.
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