Male worms have a 'sex switch' to help them insert their penis into a mate

Exclusive: Researchers at UCL found a cellular switch which creates a sensory neuron that helps a male worm insert its spicules into its mate as it wiggles backwards on it. https://www.dailymail.co.uk/sciencetech/article-8906285/Male-worms-sex-switch-help-insert-penis-mate.html?ns_mchannel=rss&ns_campaign=1490&ito=1490