reproductive behavior

DELETION of a single gene switches the sexual orientation of female mice, causing them to engage in sexual behaviour that is typical of males. Korean researchers found that deleting the appropriately named FucM gene, which encodes an enzyme called fucose mutarotase, causes masculinization of the mouse brain, so that female mice lacking the gene avoid the advances of males and try to mate with other females instead. The findings probably have little relavence to human sexual orientation, however. FucM is one of a family of enzymes involved in rearranging the atoms in small sugar molecules…
tags: Earthworm Porn, animals, annelids, mating habits, reproductive behavior, sexuality, Isabella Rossellini, streaming video This video is a look at Isabella Rossellini's bizarre and hilarious look at sex in the natural world as she explores the mating habits of those naughty earthworms.