Question

define the homologous and analogous
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Answer 1

Answer:

homologous:having same relation

Analogous: comparable in certain respects typically in a way which makes clearer the nature of things compared

Answer 2

Answer:

Analogous structures have similar functions. They are not derived from a common ancestor and have different evolutionary ancestries. Analogous structures are a result of convergent evolution. Organisms that are not related possess similar traits due to the adaptation to a similar environment or ecological niches. Natural selection forces unrelated organisms to have the most efficient and practical structures for survival. Some examples of analogous structures include wings of birds, bats, and insects. These structures serve the same function in different species. But their development patterns and the origin are different.                                                                          

Homologous structures are the organs or the other structures in different animals which descend from a common ancestor. These structures are anatomically similar, but they may perform different functions. Homologous structures are developed in related organisms since they share a common ancestor. Homology is the term which describes the sharing of characteristics by species due to a common ancestry. There are three main types of homologies. They are morphological homology (show anatomical similarities), ontogenetic homology (show developmental (embryological) similarities) and molecular homology (show similarities in DNA, RNA, and protein).