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Science 20 June 1980:
Vol. 208. no. 4450, pp. 1380 - 1383
DOI: 10.1126/science.208.4450.1380
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Articles
Hormone-Induced Sexual Differentiation of Brain and Behavior in Zebra Finches
MARK E. GURNEY 1 and
MASAKAZU KONISHI 1
1 Division of Biology, California Institute of Technology, Pasadena 91125
The male zebra finch sings, whereas the female does not. This behavioral dimorphism is correlated with the presence of morphological sex differences within the neural substrate that mediates this behavior, the song system. When a female chick is exposed to 17 -estradiol her song system is subsequently masculinized. Either testosterone or 5 -dihydrotestosterone may then induce such a female to sing when an adult.
Submitted on October 1, 1979
Revised on January 23, 1980
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