Evolution (Part 2)

Homology indicates common ancestry. Other examples are vertebrate hearts or brains. In plants also, the thorn and tendrils of Bougainvillea and Cucurbita represent homology .Homology is based on divergent evolution whereas analogy refers to a situation exactly opposite. Wings of butterfly and of birds look alike.

Created On: Jan 15, 2013 15:25 IST
Modified On: May 30, 2014 14:18 IST
Evolution (Part 2)
Evolution (Part 2)

what are the evidences of evolution? What is homologous and analogous organ? What is convergent and divergent evolution? What is founder effect? What is molecular homology? What are vestigial organs? What is atavism? To get the answers please go through the video.

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Homology is based on divergent evolution whereas analogy refers to a situation exactly opposite. Wings of butterfly and of birds look alike. They are not anatomically similarstructures though they perform similar functions. Hence, analogous structures are a result of convergent evolution.