linkedin post 2018-08-23 05:25:13

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QUIET FREE-FALL. “The state of survival beyond reproductive success can be regarded as a period of "coasting" or "free-wheeling", that is, developmental processes have ended and the ability to maintain those systems declines.” http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn
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linkedin post 2018-08-23 05:22:42

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JOB DONE. “Thus, the forces of natural selection diminish after animals reach reproductive success because survival beyond that event has diminished value for the survival of the species. Energy is better spent on guaranteeing reproductive success than it is for increasing individual longevity. Thus, after reproductive success the forces of natural selection do not favor increased longevity. However, after reproductive success an animal has the potential to survive for a period of time determined by the level of excess physiological capacity reached at sexual maturation.” http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn
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linkedin post 2018-08-23 05:21:22

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EXCESS BUFFER. “Once animals reach sexual maturation and raise progeny to independence, the excess physiological capacity, like that engineered into a space vehicle, allows each to continue beyond the vital goal. The further longevity of each is determined by the excess capacity present at the time the goal was reached. In animals that goal, of course, is reproductive success.” http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn
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linkedin post 2018-08-23 05:20:19

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BUFFER SYSTEMS. “Greater, or redundant physiological capacity increases the likelihood for animal survival to reproductive success just as redundant vital systems in complex machines, like space vehicles, better insures that they will achieve their goals.” http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn
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linkedin post 2018-08-23 05:18:29

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REPRODUCTIVE DRIVE. “Species continuation depends on the survival of a sufficient number of members of that species to live long enough to reproduce and raise progeny to independence. This fundamental premise leads to the belief that the best way to insure that this occurs is for natural selection to favor those animals having greater physiological capacity in vital organs.” http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn
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linkedin post 2018-08-26 04:34:13

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CONTROLLING TRANSPOSONS. "Exonization of transposable elements sequences supplies the genome with a source of genetic material for evolution. Uncontrolled activity of transposable elements, however, causes deleterious effects, as evidenced in both plants and animals." https://lnkd.in/dwPiXaA View in LinkedIn
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linkedin post 2018-08-26 04:28:41

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PRESERVING GENOME FIDELITY. "Companion cell DNA does not contribute to the zygotic genome, and therefore reactivation of companion cell transposable elements does not risk the genome fidelity of the next generation. Together with its vital biological function to facilitate fertilization and promote postfertilization development with reduced dependence on water, the ability of the gametophyte to protect the integrity of the zygotic genome has probably contributed to the maintenance of this distinct “generation” during angiosperm evolution." http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn
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linkedin post 2018-08-26 04:23:39

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SILENCING WORK. "Once cell fates are specified within the gametophytes, the current data suggest that “information flow” reverses with the companion cells of the pollen and embryo sac acting to silence transposable elements in the germ cells. Presumably, this would act to reinforce the default systems that repress transposable element activity in somatic cells, perhaps because of an increased requirement for genome integrity in the gametes caused by the gametic chromatin being differently packed from that of somatic cells." http://www.sciencedirect.com/science/article/pii/S1534580713000427 View in LinkedIn
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