[参考译文]一个人是男是女的决定因素是大脑而并非生殖器。美国科学家发现,早在雄性或雌性老鼠的胚胎在子宫中长出性器官之前,其大脑就已经获得所属性别的信息。星期三出版的《新科学家》杂志上写道,如果人类情形也与此相同的话,此项发现将有助于确定一些出生时性器官模糊婴儿的“大脑性别”。生物学家认为,胚胎中会发育出子宫,从而性别为女性,而如果Y染色体中一个名为SRY的基因被激活,就会长出睾丸,成为男性。文章说:“但在用老鼠进行的研究中,洛杉矶加利福尼亚大学的研究人员发现,在SRY基因被激活之前,雄性和雌性老鼠的胚胎至少 The decisive factor for a man or a woman is the brain rather than the genitals. Scientists in the United States have discovered that the brain has acquired information of its own kind before the male or female mouse’s embryo grows in the uterus. The New Scientist magazine, published on Wednesday, wrote that if the human condition is the same, this finding will help determine the ”brain gender“ of some infants who are obscured by sexual organs at birth. Biologists believe that the uterus develops in the embryo, so that the sex is female, and if a gene called SRY is activated on the Y chromosome, the testis grows and becomes male. The article said: ”But in a study using rats, researchers at the University of California, Los Angeles, found that before the SRY gene was activated, the embryos of male and female mice were at least