Evolutionary dating how accurate

“In a temperate zone when an animal dies and falls to the ground, their DNA might degrade within a year,” Denver said.In particular, they may force a widespread re-examination of determinations about when one species split off from another, if that determination was based largely on genetic evidence.For years, researchers have been using their understanding of the rates of genetic mutations in cells to help date ancient biological samples, and in what’s called “phylogenetic comparison,” used that information along with fossil evidence to determine the dates of fossils and the history of evolution.

The rates of molecular evolution “underpin much of modern evolutionary biology,” the researchers noted in their report.

“For the genetic analysis to be accurate, however, you must have the right molecular clock rate,” Denver said.

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