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 bunch 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 set by environmental elements, corresponding to temperature. However Kern and his…