研究人员发现,个性强而且自信的女性比那些个性较弱的女性更有可能生男孩。科学家们已经证明,雌性哺乳动物的卵子具有不同水平的睾丸素,那些睾丸素水平最高的卵子更有可能发育成为雄性胚胎。而女性体内的睾丸素水平则与其显性性状更强的那些特征有关。哺 The researchers found that women with strong personality and confidence are more likely to be boys than those with weaker personality. Scientists have shown that the eggs of female mammals have different levels of testosterone, and those with the highest levels of testosterone are more likely to develop into male embryos. The level of testosterone in women is related to those features that are more dominant. feed