“What makes this so exciting is that the sequences responsible for these fusions come from repetitive DNA that was long considered useless,” said Jennifer Gerton, Ph.D. “It turns out this so-called ...

Researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has likely been around for 480 million years, since before octopuses split apart from the nautilus on ...

The oldest-known sex chromosome emerged in octopus and squid between 455 million and 248 million years ago — 180 million years earlier than the previous record-holder, scientists have discovered. When ...