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Unformatted text preview: legs, which enable them to hop and look for food faster, survives and reproduces Barbellus longicorpis and Barbellus quadrapeous. Unfortunately, after Barbellus quadrapeous changes into Barbellus hirsutus in order to protect itself from enemies by using its sharp body, it becomes extinct probably by a genetic drift such as a volcano eruption. Barbellus longicorpus, on the other hand, survives but their legs and body become shorter. Then, its antenna and legs become vestigial organs due to the survival of fittest. Primordius may have lived during all strata without evolving, it could just be that all evidences are lost....
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This note was uploaded on 10/28/2010 for the course BIOLOGY BIO-1B taught by Professor Dehaan during the Spring '10 term at Berkeley College.
- Spring '10