Mammals Share 90 Percent of Genomes, Revealing 423,000 DNA Regions That Control Key Traits

Scientists studied the genomes of 240 mammalian species and found 10% of DNA is shared among all mammals, including over 400,000 regulatory regions that control gene function.
The study found DNA shared only among certain groups, like bears, bats and other hibernators, that control traits such as temperature regulation.
Animals that live alone tend to have more genes for sense of smell, likely to help with detecting predators and prey.
The study identified DNA stretches barely changed over evolution that are vital to human health and identified the basis of skills, evolutionary timelines, and extinction risk.
The study provides a massive new dataset that will set the standard for understanding mammal evolution.