The earliest recognized intercourse chromosomes have been present in an octopus species native to the Pacific Ocean. These chromosomes developed as much as 380 million years in the past, and they’re the primary proof of genetic intercourse dedication in cephalopods – a gaggle that features squid, cuttlefish, octopuses and nautiluses.

“Cephalopod intercourse dedication has been a whole thriller up up to now,” says Andrew Kern on the College of Oregon. Researchers have lengthy thought that cephalopod intercourse is decided by environmental components, resembling temperature. However Kern and his…