The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in molecular evolution that uses fossil constraints and rates of molecular change to deduce the time in geologic history when two species or other taxa diverged. It is used to estimate the time of occurrence of events called speciation or radiation. The molecular data used for such calculations is usually nucleotide sequences for DNA or amino acid sequences for proteins. It is sometimes called a gene clock or evolutionary clock.
Read more about Molecular Clock: Early Discovery and Genetic Equidistance, Relationship With Neutral Theory, Calibration, Non-constant Rate of Molecular Clock, Methods, Uses
Famous quotes containing the word clock:
“Up the reputable walks of old established trees
They stalk, children of the nouveaux riches; chimes
Of the tall Clock Tower drench their heads in blessing:
“I don’t wanna play at your house;
I don’t like you any more.”
My house stands opposite, on the other hill,”
—William Dewitt Snodgrass (b. 1926)