
Explain with suitable examples of the importance of anatomical evolution.
Answer
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Hint: Evolution is the variation in the heritable characteristics of species in the whole population over some time in successive generations. The characteristic features are expressed by the gene that passes from parents to the offsprings.
Complete answer: Anatomical features of individuals help to identify the evolution of the particular species, it provides direct evidence of how species have evolved over some time. The anatomical features show how they adapt and build features to fit in an environment. Such as homologous and analogous organs of different species.
Homologous structures or organs:- These organs have similar structures and origins but perform a different function. This supports evolution occurring in species when they were lived if the different environment and their needs are different. For example:- the size of body, shape appear in sharks and dolphins.
Analogous organs or structure:- These structures of species have different structures but perform similar functions. It proves that unrelated species when they live in the same environment conditions then they adapt themselves differently from the forearm of human and cat, flippers of whale and patagium of the bat. The similarities in bones and joints of humans, cats, dogs, birds, and fish show some similarities. The external morphological feature does not show similarity, and the uses of each organ of the different organism have a different function, either structurally related or not. The similarity in anatomy is evidence that they may have a common ancestor.
Note: The most widely accepted therapy of evolution is given by Charles Darwin and Alfred Russel Wallace in the 19th century, in his book called the origin of species, by giving the theory of natural selection.
Complete answer: Anatomical features of individuals help to identify the evolution of the particular species, it provides direct evidence of how species have evolved over some time. The anatomical features show how they adapt and build features to fit in an environment. Such as homologous and analogous organs of different species.
Homologous structures or organs:- These organs have similar structures and origins but perform a different function. This supports evolution occurring in species when they were lived if the different environment and their needs are different. For example:- the size of body, shape appear in sharks and dolphins.
Analogous organs or structure:- These structures of species have different structures but perform similar functions. It proves that unrelated species when they live in the same environment conditions then they adapt themselves differently from the forearm of human and cat, flippers of whale and patagium of the bat. The similarities in bones and joints of humans, cats, dogs, birds, and fish show some similarities. The external morphological feature does not show similarity, and the uses of each organ of the different organism have a different function, either structurally related or not. The similarity in anatomy is evidence that they may have a common ancestor.
Note: The most widely accepted therapy of evolution is given by Charles Darwin and Alfred Russel Wallace in the 19th century, in his book called the origin of species, by giving the theory of natural selection.
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