𝔖 Bobbio Scriptorium
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Parental hormone levels and mammalian sex ratios at birth

✍ Scribed by William H. James

Book ID
108360462
Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
522 KB
Volume
139
Category
Article
ISSN
0022-5193

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πŸ“œ SIMILAR VOLUMES

Evidence that Mammalian Sex Ratios at Bi
Evidence that Mammalian Sex Ratios at Birth are Partially Controlled by Parental Hormone Levels at The Time of Conception
✍ William H. James πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 490 KB

Evidence is adduced for the hypothesis that mammalian (including human) sex ratios at birth are partially controlled by the hormone levels of both parents at the time of conception. Sex ratio variation is considered under three main headings viz that identified by Clutton-Brock & Iason (1986); that

Hypotheses on Mammalian Sex Ratio Variat
Hypotheses on Mammalian Sex Ratio Variation at Birth
✍ William H. James πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 132 KB

Some comments are made on two hypotheses on the variation of mammalian sex ratios (proportions male) at birth viz. Krackow's developmental asynchrony hypothesis and my parental hormone hypothesis. It seems not unfair to characterise his hypothesis as functioning to support the conventional Mendelian

The hypothesized hormonal control of mam
The hypothesized hormonal control of mammalian sex ratio at birthβ€”A second update
✍ William H. James πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 619 KB

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 hum
The hypothesized hormonal control of human sex ratio at birthβ€”An update
✍ William H. James πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 English βš– 595 KB

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 resu