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DNA Clock

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DNA Clock
The use of DNA hybridisation studies to infer relatedness of organisms, and points of evolutionary divergence from each other


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The ends of the chromosomes called "telomeres"-which are important for the genetic stability of the cell and they act as a DNA clock that measures the age of the cell-become shorter each time a cell divides, due to which the cell stops dividing and dies.
The DNA clock they used worked well in their research because bird species are closely related taxa.
 
 
 
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