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Biologically, an adult is a human or other organism that has reached sexual maturity. In human context, the term adult has additional meanings associated with social and legal concepts. In contrast to a legal minor , a legal adult is a person who has attained the age of majority and is therefore regarded as independent, self-sufficient, and ...
Maturity (geology), in petroleum geology; Maturation, as a threat to internal validity of an experiment; Tissue maturation, an aspect of developmental biology The final stages of cellular differentiation of cells, tissues, or organs
A life history strategy is the "age- and stage-specific patterns" [2] and timing of events that make up an organism's life, such as birth, weaning, maturation, death, etc. [3] These events, notably juvenile development, age of sexual maturity, first reproduction, number of offspring and level of parental investment, senescence and death, depend ...
Developmental biology is the study of the process by which animals and plants grow and develop. Developmental biology also encompasses the biology of regeneration , asexual reproduction , metamorphosis , and the growth and differentiation of stem cells in the adult organism.
[18] [19] Andrew Arthur Abbie agrees, citing the gerontomorphic fleshy human nose and long human legs as contradicting the neoteny hominid evolution hypothesis, although he does believe humans are generally neotenous. [7] Brian K. Hall also cites the long legs of humans as a peramorphic trait, which is in sharp contrast to neoteny. [20]
A juvenile is an individual organism (especially an animal) that has not yet reached its adult form, sexual maturity or size. Juveniles can look very different from the adult form, particularly in colour, and may not fill the same niche as the adult form. [1] In many organisms the juvenile has a different name from the adult (see List of animal ...
Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [1]
At maturity, there are roughly 30 trillion cells, and 38 trillion bacteria in the body, [3] [4] an estimate arrived at by totaling the cell numbers of all the organs of the body and cell types. The skin of the body is also host to billions of commensal organisms as well as immune cells. [5] Not all parts of the body are made from cells.