TY - GEN AU - Kumar,Sudhir TI - Molecular clocks: four decades of evolution SN - 1471-0056 PY - 2005///0926 KW - Animals KW - Evolution, Molecular KW - Humans KW - Proteins KW - genetics N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.; Review UR - https://doi.org/10.1038/nrg1659 ER -