justaevolvedchimp1784624422

Metamorphosis turns a caterpillar into biological soup. It dissolves its entire brain and builds a new one from scratch. Yet somehow, the memories survive. A ten-year-old boy from Kobe, Japan, just proved it. Jo Nagai noticed the swallowtail butterflies he raised at home behaved differently around him than wild ones. So he emailed a Georgetown entomologist and designed a home experiment. He trained caterpillars to associate a mild vibration with the smell of lavender. When they emerged as adult butterflies, seventy percent still avoided the scent. But here is the detail that disrupts everything we know about inheritance. When Jo bred them, their children and grandchildren also hated the smell of lavender. They were born with an instinctive memory of an event they never experienced. He documented the entire thing in a carefully researched 33-page paper.