James W H
MRC Mammalian Development Unit, University College, London, U.K.
J Theor Biol. 1990 Apr 23;143(4):555-64. doi: 10.1016/s0022-5193(05)80029-3.
I have reviewed the literature on the human sex ratio at birth (W.H. James, 1987 a. Hum. Biol. 59, 721), and proposed a hypothesis to account for its variation (W.H. James, 1987 b. Hum. Biol. 59, 873). Since submitting those papers, some sets of data have been published which bear on the hypothesis and on how it may be tested. In this note some comments are made on these new data sets. The hypothesis proposes that hormone levels of both parents at the time of conception affect the sex of the resulting zygotes. This suggestion is unlikely to gain wide credence unless and until it has been demonstrated that sex ratios can thus be manipulated in experimental animals. This paper is offered in the hope that it may prompt workers to try testing the hypothesis in whatever way is open to them.
我已查阅了关于人类出生性别比的文献（W.H. 詹姆斯，1987年a.《人类生物学》59卷，721页），并提出了一个假说来解释其变化（W.H. 詹姆斯，1987年b.《人类生物学》59卷，873页）。自从提交那些论文以来，已经发表了一些与该假说以及如何对其进行检验相关的数据集。在本注释中，对这些新数据集进行了一些评论。该假说提出，受孕时父母双方的激素水平会影响所形成受精卵的性别。除非且直到已证明在实验动物中可以如此操纵性别比，否则这一观点不太可能获得广泛认可。提供本文是希望它可能促使研究人员尝试以他们所能采用的任何方式来检验这一假说。
