Male brain wired to remember 'good sex': A pair of neurons that has been found to remember and seek sex even at the expense of food. These male-specific neurons are required for sex-based differences in learning, suggesting that sex differences in cognitive abilities can be genetically hardwired. A research team at an eminent American medical college has found in a recent study discovered how genetic and developmental differences between the two sexes lead to structural changes in the brain of male worms during sexual maturation.

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