Tag - Octopuses

Octopuses Have a Hidden Sex Chromosome That Predates Dinosaurs

Credit: PixabayUniversity of Oregon researchers have discovered a sex chromosome in the California two-spot octopus that likely dates back 480 million years—long before octopuses and nautiluses diverged. This makes it one of the oldest known animal sex chromosomes.The finding confirms that octopuses and other cephalopods, including squid and nautiluses, use chromosomes to determine sex,...