Genetic lifespan clock’discovered

摘要

At team of geneticists have created a new model of estimating the lifespans of vertebrates,including extinct species.The’lifespan clock’screens 42 selected genes for CpG sites-short pieces of DNA whose density is correlated with lifespan-to predict how long members of a given vertebrate species may live.Maximum lifespan for a species is difficult to define and can differ greatly between species.Previous research has suggested that it is controlled by genes but to date,no genetic variants have been found that account for these differences.