Zhores A. Medvedev, reviewing Weismann's theory a century later, considered that the accuracy of genome replicative and other synthetic systems alone cannot explain the immortality of germ lines. Rather he thought that known established features of the biochemistry and genetics of sexual reproduction clearly indicate the presence of unique information maintenance and restoration processes at the different stages of gametogenesis. In particular, he considered that the most important opportunities for information maintenance of germ cells are created by meiotic recombination and repair---unique processes that are capable of restoring the integrity of DNA and chromosomes from the types of lesions and alterations that are irreversible in somatic cells.
Zhores A. Medvedev, reviewing Weismann's theory a century later, considered that the accuracy of genome replicative and other synthetic systems alone could not explain the immortality of germ lines. Rather Medvedev thought that known features of the biochemistry and genetics of sexual reproduction indicated the presence of unique information maintenance and restoration processes at the different stages of gametogenesis. In particular, Medvedev considered that the most important opportunities for information maintenance of germ cells are created by recombination during meiosis and DNA repair; he saw these as processes within the germ cells that were capable of restoring the integrity of DNA and chromosomes from the types of damage that caused irreversible ageing in somatic cells.
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cannot
could not
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he
Medvedev
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established
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clearly indicate
indicated
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he
Medvedev
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meiotic recombination and repair---unique processes that are
recombination during meiosis and DNA repair; he saw these as processes within the germ cells that were
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lesions and alterations that are irreversible
damage that caused irreversible ageing