Category Archives: Reproduction

Thesis 13

Thesis #13 – The declining forces of natural selection lead to an evolutionary failure to establish the genomic information required for tuning the complex networks of life well enough to provide a high level of health indefinitely; there is no … Continue reading

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Thesis 29

Thesis #29 – Species with fully symmetrical fission as the sole means of reproduction do not have a declining force of natural selection acting on survival, and they do not evolve aging phases in which all individuals show declining survival. … Continue reading

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Thesis 32

Thesis #32 – Before the forces of natural selection plateau, it is possible for genetic drift, due to small population sizes among other possibilities, to weaken the ability of natural selection to distinguish among genetic variants affecting later adult life, … Continue reading

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Thesis 33

Thesis #33 – When late-adult plateaus in survival and reproduction occur, members of biological cohorts that reach such plateaus will show stabilization of some but not necessarily all functional characters. Evolutionary theory makes a simple prediction about how the key … Continue reading

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Thesis 34

Thesis #35 – Severe antagonistic pleiotropy can cause the evolution of zero late-adult survival probability even under ideal conditions, when genetic trade-offs between early reproduction and subsequent adult survival are sufficiently strong. Not all organisms have three phases to their … Continue reading

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Thesis 35

Thesis #35 – The ages at which the forces of natural selection plateau depend on the last ages of reproduction and survival in the evolutionary history of a population, allowing experimental evolution of the cessation of aging by deliberately changing … Continue reading

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Thesis 45

Thesis #45 – Our ancestral hunter-gatherer populations had generally low population densities, and thus low effective population sizes, which produced relatively early cessation of aging at relatively high function due to genetic drift. With very low population densities among our … Continue reading

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