Great white housewives

时间:2019-03-06 11:04:01166网络整理admin

Female great white sharks stay at home while males go gallivanting on the high seas, reports a team led by Andrew Martin of the University of Colorado at Boulder in this week’s Nature. They looked at the DNA of two shark populations—one off the coast of South Africa and another near Australia and New Zealand. Mitochondrial DNA, which is passed down from mothers to their offspring, was different in the two groups, suggesting that the females hadn’t intermingled. But nuclear DNA, which contains a male contribution,