How they are considered as an evidence of evolution.

1.	How they are considered as an evidence of evolution.
Answer» Analogy and homology of structures indicate the evidences of evolution from comparative study of morphology and anatomy of form, structure, relative position of different organs and their functions. Analogy indicates that similar environmental conditions and habitat result in the selection of similar adaptive features in different groups of organisms towards the similar function. This shows the evolution of similar functional structures from unrelated organs. This is the result of convergent evolution. Homology includes the organs having similar structure origin and development, developed to have different forms so as to perform different functions in different groups of organisations. This phenomenon of producing functionally different forms from structurally similar organs is the result of divergent evolution. It indicates towards the Common ancestory.

Answer»

Analogy and homology of structures indicate the evidences of evolution from comparative study of morphology and anatomy of form, structure, relative position of different organs and their functions. Analogy indicates that similar environmental conditions and habitat result in the selection of similar adaptive features in different groups of organisms towards the similar function.

This shows the evolution of similar functional structures from unrelated organs. This is the result of convergent evolution.

Homology includes the organs having similar structure origin and development, developed to have different forms so as to perform different functions in different groups of organisations. This phenomenon of producing functionally different forms from structurally similar organs is the result of divergent evolution. It indicates towards the Common ancestory.

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