Friday, April 19, 2013

A fish that looks like its ancestor



Scientists decode DNA of 'living fossil' fish


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          Scientists have unlocked the DNA of a "living fossil" and are gaining information on how our animals have changed over the years. In 1938 a African fisher caught a fish that looks like likes its ancestor from millions of years ago. The scientists say it hasn't changed very much since its ancestor lived 300 million years ago. I think this is important because scientists are discovering how animals changed and might be able to bring back the first animals. I also think this is important because if this fish looks so much like its ancestor, there might be other animals that look like there ancestors and scientists might get more DNA.


This 2008 image made available by the Smithsonian's National Museum of Natural History shows an African coelacanth (Latimeria chalumnae). Scientists have decoded the DNA of the celebrated "living fossil'' fish, an achievement that should help researchers study how today's land animals with backbones evolved from fishy ancestors. The African coelacanth is closely related to the fish lineage that led to mammals, amphibians, reptiles and birds, and it hasn't changed much from its ancestors of even 300 million years ago, researchers said. So it can give an indirect glimpse of the ancient fish that made the move to land. (AP Photo/Smithsonian, Chip Clark)

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