University of Chicago Medical Center

New fins evolve repeatedly in teleost fishes

Though present in more than 6,000 living species of fish, the adipose fin, a small appendage that lies between the dorsal fin and tail, has no clear function and is thought to be vestigial. However, a new study analyzing ...

dateMar 05, 2014 in Plants & Animals
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Evolution of new species requires few genetic changes

Only a few genetic changes are needed to spur the evolution of new species—even if the original populations are still in contact and exchanging genes. Once started, however, evolutionary divergence evolves rapidly, ultimately ...

dateOct 31, 2013 in Evolution
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