All identical twins may share a common set of chemical markers on their DNA

Identical siblings are used to sharing a lot with their twin, including their DNA. But new research suggests all identical twins share a common signature of twinhood, not in their…

DNA offers a new look at how Polynesia was settled

Polynesian voyagers settled islands across a vast expanse of the Pacific Ocean within about 500 years, leaving a genetic trail of the routes that the travelers took, scientists say. Comparisons…