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  2. Evolution of ageing - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_ageing

    Mutation accumulation (MA) and antagonistic pleiotropy (AP) are two factors which contribute to senescence. [7] Both MA, and AP contribute to age-related declines in fitness. [8] The accumulation of random, germline age-related mutated alleles is known as mutation accumulation. Note that somatic mutations are not heritable, they are only a ...

  3. Adult development - Wikipedia

    en.wikipedia.org/wiki/Adult_development

    Adult development is a somewhat new area of study in the field of psychology. Previously it was assumed that development would cease at the end of adolescence. Further research has concluded that development continues well after adolescence and into late adulthood.

  4. Stage-crisis view - Wikipedia

    en.wikipedia.org/wiki/Stage-Crisis_View

    The main crisis in the Late Adulthood Transition is a person fears that their inner youthfulness is disappearing, and only an old, fatigued, boring person will remain, leaving a person in this period with the task of keeping their youthfulness in a way that is suitable for late adulthood. [1] Levinson The Late Adulthood Transition is also said ...

  5. Ageing - Wikipedia

    en.wikipedia.org/wiki/Ageing

    Ageing (or aging in American English) is the process of becoming older.The term refers mainly to humans, many other animals, and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal.

  6. Biogerontology - Wikipedia

    en.wikipedia.org/wiki/Biogerontology

    The hand of an older adult Life expectancy in various countries of the world in 2019. 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]

  7. Senescence - Wikipedia

    en.wikipedia.org/wiki/Senescence

    Senescence (/ s ɪ ˈ n ɛ s ə n s /) or biological aging is the gradual deterioration of functional characteristics in living organisms. Whole organism senescence involves an increase in death rates or a decrease in fecundity with increasing age, at least in the later part of an organism's life cycle.

  8. Aging and society - Wikipedia

    en.wikipedia.org/wiki/Aging_and_society

    [4] [38] Other research shows that even late in life, the potential exists for physical, mental, and social growth and development. [39] Successful ageing consists of three components: [3] The avoidance of illness and disease; High cognitive and physical function; Social and productive engagement

  9. Antagonistic pleiotropy hypothesis - Wikipedia

    en.wikipedia.org/wiki/Antagonistic_pleiotropy...

    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.