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  4. An important evidence in favour of organic evolution is the occurrence of-

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Q. An important evidence in favour of organic evolution is the occurrence of-

Delhi UMET/DPMTDelhi UMET/DPMT 2008Evolution

Solution:

Presence of homologous and vestigial organs are important evidences in favour of organic evolution. They show divergent evolution. Vestigial organs are non-functional in related animals and were functional in the ancestors. Homologous organs have the same embryonic origin and basic structures though they may or may not perform the same function. Analogous organs are different in basic structure and origin but appear similar and perform similar functions.