Definition of molecular clock in English:

Share this entry

molecular clock


The average rate at which a species' genome accumulates mutations, used to measure their evolutionary divergence and in other calculations.
Example sentences
  • Here, we discuss the usefulness and limitations of molecular clocks in studying avian evolution, with emphasis on the use of an accurate calibration point.
  • The majority of the fossils used for calibration of avian molecular clocks have uncertain phylogenetic relationships.
  • Divergence times of living species, estimated from molecular clocks, have the potential to constrain hypotheses of the relationships of fossil species.
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.