In genetic evolution physiological and behavioural changes result in increased chances of survival in a given environment. In the biological sense adaptation means individual responses which act to maintain homeostatis as also evolutionary change over generations towards attaining increased fitness to live and thrive.The concept is also applied to human behavior and socio-cultural evolution.
Evolutionary change in the genetic composition of a population may represent either progressive adaptation to constant environmental conditions or adjustment to changing environmental conditions.
Macroevolution is broadly similar to adaptive radiation. Through this process diversification of an initial stock into smaller stocks takes place and each becomes adapted to its own environment.Adaptive radiation in biological sense is most strikingly illustrated among invertebrates in groups showing rapid diversification above the species level.
During evolution change in relative growth of different parts of the body of a species may give rise to different physical proportions. Changes relatively gradual through time may account for adaptation to environment.
In the concept of pre adaptation animals must already possess characters capable of being modified if they have to adapt to new environments.
Evolutionary change in the genetic composition of a population may represent either progressive adaptation to constant environmental conditions or adjustment to changing environmental conditions.
Macroevolution is broadly similar to adaptive radiation. Through this process diversification of an initial stock into smaller stocks takes place and each becomes adapted to its own environment.Adaptive radiation in biological sense is most strikingly illustrated among invertebrates in groups showing rapid diversification above the species level.
During evolution change in relative growth of different parts of the body of a species may give rise to different physical proportions. Changes relatively gradual through time may account for adaptation to environment.
In the concept of pre adaptation animals must already possess characters capable of being modified if they have to adapt to new environments.
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