Physiological adaptation is the totality of physiological reactions that underlies the body’s adaptation to changes in environmental conditions and is aimed at maintaining the relative constancy of its internal environment – homeostasis.
Adaptation of the body is distinguished between genotypic and phenotypic. The genotypic basis is based on the conditions of natural selection and mutations, which led to changes in the organisms of an entire species or population. It is in the process of this type of adaptation that modern species of animals, birds and humans were formed. The genotypic form of adaptation is hereditary. The phenotypic form of adaptation is due to individual changes in a particular organism for a comfortable stay in certain climatic conditions. It can also develop due to the constant exposure to an aggressive environment. As a result, the body acquires resistance to its conditions.
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