Scientists trace gene that triggers sexual urge

Scientists trace gene that triggers sexual urge
ASSOCIATED PRESS

WASHINGTON, AUG 29: Scientists have identified the first human gene that may trigger people's primal urges, including sex and defence.

In animals, researchers have convincingly documented how odourless molecules known as pheromones trace a complex neurological path to stimulate parts of the brain that are deeply rooted in instinct. For decades, researchers believed that humans biologically communicate through pheromones too. But until now, they had been unable to find any of the equipment used to produce and detect these potent molecules.

In experiments at Rockefeller University and Yale, neurogeneticists have isolated a gene known as V1rl1 that apparently encodes a pheromone receptor in the mucous lining of the nose.

Humans share the gene with rodents and other mammals that rely heavily on pheromone cues to survive. It has not been determined whether the gene is active in humans or which pheromone-induce behaviour the gene might induce.

Other scientists described the discovery as an ``exciting result'' that ``opens a big door'' into the role of pheromones in human development.