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BIODEMOGRAPHY IN SIENA, ITALY

Published online by Cambridge University Press:  01 October 1998

A. VIENNA ,
G. F. DE STEFANO ,
A. BASTIANINI  and
G. BIONDI
A. VIENNA
Affiliation:
Dipartimento di Biologia, Università degli Studi di Roma `Tor Vergata', Roma, Italy
G. F. DE STEFANO
Affiliation:
Dipartimento di Biologia, Università degli Studi di Roma `Tor Vergata', Roma, Italy
A. BASTIANINI
Affiliation:
Istituto di Anatomia Umana Normale, Università degli Studi di Siena, Siena, Italy
G. BIONDI
Affiliation:
Dipartimento di Biologia Animale, Università degli Studi di Torino, Torino, Italy
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Abstract

Data were obtained on surnames of the parents and places of birth of the parents and grandparents of children in Siena, Italy. Isonymy and total inbreeding coefficient, and their random and non-random components, are 0·005, 0·00125, 0·00019 and 0·00106, respectively. Isonymy and inbreeding figures are similar to those of other medium-sized Italian towns, while higher values have been reported for Italian villages and Italian ethnic minorities. City endogamy, and endogamy of Contrada for grandparents have the same values (44·1 and 44·8%, respectively), but for parents, endogamy of Contrada is lower than city endogamy (15·2 and 33·4%, respectively). The difference between the extent of Contrada endogamy expected at random and observed in the parents' generation does not seem to affect the genetic structure of the present population. However, the bulk of marriage migration (more than 70%) is short range, with people coming from Tuscany. There is no statistical difference in marital migration between males and females.

Type
Research Article
Information
Journal of Biosocial Science , Volume 30 , Issue 4 , October 1998 , pp. 521 - 528
Copyright
© 1998 Cambridge University Press

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