Further evidence is adduced to support the hypothesis that the sexes of mammalian (including human) offspring are partially controlled by parental hormone levels at the time of conception. The evidence relates to variation of sex ratios at birth with (1) time of insemination within the cycle of seve
The hypothesized hormonal control of human sex ratio at birth—An update
✍ Scribed by William H. James
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 595 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0022-5193
No coin nor oath required. For personal study only.
✦ Synopsis
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.
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