You are interested in how testosterone mediates male mating behavior in mice. On

Question

You are interested in how testosterone mediates male mating behavior in mice. One set of experiments shows that male adults given that when testosterone is blocked in utero, males never try to mate, even if given testosterone as adults. Which is the best conclusion? Testosterone has both activational and organizational effects on this behavior B. Testosterone has activational but not organizational effects on this behavior C. The data are contradictory, and so no conclusion can be made 0 D. Testosterone has organizational but not activational effects on this behavior

Explanation / Answer

ans. Testosterone has both activational and organizational effects on this behavior.

The effect of hormones on behavior are usually described in terms of organizational versus activational effects. The organizational effects are those that occur during early fetal development and play an important role in sexual differentiation. The activational effects are those that occur during and after puberty. The cells and structures in the body that have been initially organized along male or female lines during early fetal development, are then activated by the sex steroids.

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