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Tuesday, 7 August 2007

Female Mice Turned Into Male Mice

Scientists have found a way to turn female mice into aggressive, pelvic-thrusting masculine lotharios in an experiment that challenges established dogma.

For years, scientists have searched in vain for the bits of the brain that underpin the dramatic differences between males and females.

Now biologist say that all these efforts may have been in vain because such differences may not arise in the brain at all, thanks to a study that could may help provide profound new insights into the differences between the sexes.

The work comes up with the startling suggestion that both male and female brains contain the circuits for male and female behaviour but the ones that are actually used depend on signals from the body, which may turn one circuit on and the other one off. London Telegraph