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Evolvability, Population Benefit, and the Evolution of Programmed Aging in Mammals
1Azinet LLC, Crownsville, MD 21032, USA. tgoldsmith@azinet.com.
Biochemistry. Biokhimiia
|March 1, 2018
Summary
Programmed aging theories suggest evolved mechanisms limit lifespan, contrary to traditional evolutionary thought. This concept, supported by genetics, proposes that traits benefiting a population can evolve even if detrimental to individuals.
Area of Science:
- Evolutionary biology
- Gerontology
- Genetics
Background:
- Programmed aging theories propose evolved biological mechanisms limit lifespan and cause age-related diseases.
- This conflicts with traditional interpretations of Darwin's survival-of-the-fittest.
- Recent genetic discoveries challenge these interpretations, suggesting programmed aging can evolve.
Purpose of the Study:
- To explore the evolutionary basis of programmed aging.
- To reconcile programmed aging with evolutionary mechanics.
- To highlight the implications for understanding age-related diseases.
Main Methods:
- Review of evolutionary biology and genetics literature.
- Analysis of "evolvability theories" regarding population-level traits.
- Theoretical framework development linking lifespan limitation to evolvability.
Main Results:
- Traits benefiting a population can evolve even if harmful to individuals.
- Evolvability theories support the evolution of programmed senescence.
- Species-specific lifespan limitation may confer an evolvability advantage.
Conclusions:
- Programmed aging mechanisms are evolutionarily plausible.
- Senescence may have evolved to enhance a population's long-term adaptability.
- This paradigm shift has significant implications for aging and disease research.
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