Clock Genes
Circadian rhythms are fluctuations in biochemical and behavioral activities that occur over a period of about 24 hours. These activities are not simply a light-dark reaction, but are gener...
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Molecular Clocks
The molecular clock hypothesis, first advanced in 1965 by Linus Pauling (1901-1994) and Emile Zuckerkandl, suggests that the mutation driven changes (substitutions) in the amino acid ...
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Clock Genes