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- Evolution_of_ageing abstract "Enquiry into the evolution of aging aims to explain why almost all living things weaken and die with age. There is not yet agreement in the scientific community on a single answer. The evolutionary origin of senescence remains a fundamental unsolved problem in biology.Historically, ageing was first likened to "wear and tear": living bodies get weaker just as with use a knife's edge becomes dulled or with exposure to air and moisture iron objects rust. But this idea was discredited in the 19th century when the second law of thermodynamics was formalized. Entropy (disorder) must increase inevitably within a closed system, but living beings are not closed systems. It is a defining feature of life that it takes in free energy from the environment and unloads its entropy as waste. Living systems can even build themselves up from seed, and routinely repair themselves. There is no thermodynamic necessity for senescence. In addition, generic damage or "wear and tear" theories could not explain why biologically similar organisms (e.g. mammals) exhibited such dramatically different life spans. Furthermore, this initial theory failed to explain why most organisms maintain themselves so efficiently until adulthood and then, after reproductive maturity, begin to succumb to age-related damage.".
- Evolution_of_ageing thumbnail Nursing_home.JPG?width=300.
- Evolution_of_ageing wikiPageExternalLink species.
- Evolution_of_ageing wikiPageExternalLink Evolution.htm.
- Evolution_of_ageing wikiPageExternalLink programmed_aging.pdf.
- Evolution_of_ageing wikiPageExternalLink LifeTable2005.html.
- Evolution_of_ageing wikiPageExternalLink sens2.pdf.
- Evolution_of_ageing wikiPageExternalLink the-evolution-of-aging-23651151.
- Evolution_of_ageing wikiPageExternalLink www.programmed-aging.org.
- Evolution_of_ageing wikiPageExternalLink evolution.html.
- Evolution_of_ageing wikiPageID "5914541".
- Evolution_of_ageing wikiPageRevisionID "604339609".
- Evolution_of_ageing hasPhotoCollection Evolution_of_ageing.
- Evolution_of_ageing subject Category:Ageing.
- Evolution_of_ageing subject Category:Death.
- Evolution_of_ageing subject Category:Evolutionary_biology.
- Evolution_of_ageing subject Category:Evolutionary_theories_of_biological_aging.
- Evolution_of_ageing subject Category:Life_extension.
- Evolution_of_ageing subject Category:Senescence.
- Evolution_of_ageing subject Category:Theories_of_aging.
- Evolution_of_ageing subject Category:Theories_of_biological_aging.
- Evolution_of_ageing comment "Enquiry into the evolution of aging aims to explain why almost all living things weaken and die with age. There is not yet agreement in the scientific community on a single answer. The evolutionary origin of senescence remains a fundamental unsolved problem in biology.Historically, ageing was first likened to "wear and tear": living bodies get weaker just as with use a knife's edge becomes dulled or with exposure to air and moisture iron objects rust.".
- Evolution_of_ageing label "Evolution of ageing".
- Evolution_of_ageing sameAs m.0fd9mk.
- Evolution_of_ageing sameAs Q5418641.
- Evolution_of_ageing sameAs Q5418641.
- Evolution_of_ageing wasDerivedFrom Evolution_of_ageing?oldid=604339609.
- Evolution_of_ageing depiction Nursing_home.JPG.
- Evolution_of_ageing isPrimaryTopicOf Evolution_of_ageing.
