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For starters, members of other species couldn't tell what they were looking at, and tried to mate with melanogaster females. There's a movie available for this one, too. You must login or create an account to comment. Which raises the prospect that humans could have done even better in the earlier experiment if they knew which gestures said "help me out here" to a chimp. This is apparently true for everyone's favorite fruit fly, Drosophila melanogaster , where the genetic elimination of pheromone producing cells had some rather unusual effects. Juggling on the brain: When it comes to the brain, the term "white matter" refers to the its wiring, the bundles of axons that connect nerve cells within and among different areas of the brain. Apparently, chimps help each other out quite readily, but only if the one in need of assistance makes a request.

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Nor did I realize that there's a term for the fear of being laughed at although I probably should have , gelotophobia. Within the same species, males preferred to go after the pheromoneless females, but they also attempted to mate with males that didn't produce pheromones. Unfortunately or, perhaps, fortunately , both are trying to mate as males, so they don't manage to line things up quite right, leaving one to attempt to mate with the other's face. Since nerve cells are known to change their connections in response to repeated stimuli, the title of a recent paper makes a good degree of sense: "Training induces changes in white-matter architecture.

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