follow Dictionary.com

How do you spell Hannukah?

molecular clock

noun
1.
the changes in the amino acid sequences of proteins that take place during evolution and speciation, and from which the dates of branchings of taxonomic groups can be deduced.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Contemporary definitions for molecular-clock
noun

the rate at which nucleotide (amino acid) substitutions occur in a given DNA (protein) sequence

Dictionary.com's 21st Century Lexicon
Copyright © 2003-2014 Dictionary.com, LLC
Cite This Source

Word of the Day

Difficulty index for molecular clock

Few English speakers likely know this word

Word Value for molecular

13
18
Scrabble Words With Friends

Quotes with molecular-clock