linkedin post 2018-09-13 03:59:11

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GENETIC DEATH. "In several model organisms, the specific genes influencing life span have been identified and there are now numerous examples where a molecular network promotes fitness early in life only to result in senescence and decreased fitness later. These are the genetic mechanisms for the Anatagonistic Pleiotropy (AP) hypothesis." View in LinkedIn
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linkedin post 2018-09-13 04:01:50

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LEAN TIME EXTENSION. "The IGF-1 signaling pathway is involved in regulating life span in several model organisms, including...nematodes, and rodents. Several loci interact in what the authors term a “survival pathway”. The authors suggest that this pathway is activated to “survive unfavorable conditions in an effort to reproduce at a later time” View in LinkedIn
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linkedin post 2018-09-13 04:06:10

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FITNESS EFFECTS. "Anatagonistic Pleiotropy (AP) hypothesis and the mutation accumulation hypotheses. These hypotheses are distinguished by the early effects of genes and mutations. AP refers to traits with early positive effects that trade for or against later negative effects while mutation accumulation refers specifically to costly mutations with no fitness effect early in life." View in LinkedIn
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linkedin post 2018-09-14 04:30:47

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THE TRADE-OFF GAME. "In Pacific salmon and the marsupial Antechinus stuartii, the ability to exploit tissue protein as an energy reserve may increase reproductive success. In Octopus, the behavioral effects of optic gland secretion are likely to have an impact on hatching success, as time spent feeding is time not spent on brood care. In semelparous plants, a trade-off between survival and reproduction is supported by both experimental and comparative evidence." View in LinkedIn
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