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Enquiry into the evolution of ageing, or aging, ... The basis for this difference is a fundamental problem in biology. The Russian biologist and historian Zhores A ...
In 1991, he published Evolutionary Biology of Aging [1] exploring a view of the subject based on antagonistic pleiotropy, the hypothesis that aging is caused by genes that have two effects, one acting early in life and the other much later. The genes are favored by natural selection as a result of their early-life benefits, and the costs that ...
All evolutionary theories of aging rest on the basic mechanisms that the force of natural selection declines with age. [19] [20] Mechanistic theories of aging can be divided into theories that propose aging is programmed, and damage accumulation theories, i.e. those that propose aging to be caused by specific molecular changes occurring over time.
So much for the idea of aging gracefully – or gradually. New research suggests the body ages in bursts, in particular, rapid changes about age 44 and another when we hit 60. We consider aging as ...
The mutation accumulation theory of aging was first proposed by Peter Medawar in 1952 as an evolutionary explanation for biological aging and the associated decline in fitness that accompanies it. [1] Medawar used the term 'senescence' to refer to this process.
Strength of natural selection plot as a function of age. The antagonistic pleiotropy hypothesis (APT) is a theory in evolutionary biology that suggests certain genes may confer beneficial effects early in an organism's life, enhancing reproductive success, while also causing detrimental effects later in life, contributing to the aging process.
In biogerontology, the disposable soma theory of aging states that organisms age due to an evolutionary trade-off between growth, reproduction, and DNA repair maintenance. [1] Formulated by British biologist Thomas Kirkwood , the disposable soma theory explains that an organism only has a limited amount of resources that it can allocate to its ...
Biogerontology is the sub-field of gerontology concerned with the biological aging process, its evolutionary origins, and potential means to intervene in the process. [1] The term "biogerontology" was coined by S. Rattan , and came in regular use with the start of the journal Biogerontology in 2000.