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 ...
Cephalopods may have the oldest sex chromosomes of any animal, according to a new discovery in the octopus genome. That's a ...
What stands out the most about this ancient cephalopod sex chromosome is how little the chromosome has changed over time.