Thinkaboutthatnexttimeyou'reabouttomake a bigdecision.
Whenstudyingthesefruitflybrains, scientistsidentifiedonesinglegenethatwhenmutated, rendered a femalecompletelyincapableofdecidingon a mate, evenwhen a maleistryingreallyhard...thepoorguy.
You'renotgonnagetit. It's alreadybeendecided.
Fromthere, scientistswereabletomapthiscourtshipgeneto a smallnumberofexcitatoryneuronslocatedinjustthreedistinctregionsofthebrain.