A study published in the BMC Genetics Journal found that the deletion of a key hormone regulating gene alters the sexual preference of female mice.
Researchers at the Korea Advanced Institute of Science and Technology hypothesized that the exposure of the hormone oestrogen to the brains of female mice influences which gender role they takes on. In mice, the fucose mutarotase (FucM) gene regulates the amount of exposure to oestrogen that the brain is subjected to. When this enzyme-producing gene is deleted
This article appears in Jul 8-14, 2010.