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Fertility and Multiple Births*

Published online by Cambridge University Press:  01 August 2014

L. Gedda  and
G. Brenci
L. Gedda
Affiliation:
«G. Mendel» Institute of Medical Genetics and Twin Research, Rome
G. Brenci
Affiliation:
«G. Mendel» Institute of Medical Genetics and Twin Research, Rome

Summary

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The study of Italian Vital Statistics, from 1957 to 1966, reveals various classes of fertility (sterility, infertility, mean fertility, hyperfertility) and the curve of fertility in the woman's biological time. The study of lying-in women in Obstetrics Departments also yields data revealing an interaction between class and moment of fertility. The study of the Mendel Institute's twin file finally yields data stressing the existence of a relation between hyperfertility and multiple births. Endocrine fertility may thus be considered as genetically conditioned, and multiple births as an epiphenomenon of the hyperfertile class.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 17 , Issue 3 , July 1968 , pp. 417 - 427
Copyright
Copyright © The International Society for Twin Studies 1968

Footnotes

*

Paper presented at the 6th World Congress of Fertility and Sterility - Tel Aviv, May 20-27, 1968.

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