Tremblay Marc et Vézina Hélène. (2000). New estimates of intergenerational time intervals for the calculation of age and origins of mutations. The American Journal of Human Genetics, 66, (2), p. 651-658.
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URL officielle: https://dx.doi.org/doi:10.1086/302770
Résumé
Intergenerational time intervals are frequently used in human population-genetics studies concerned with the ages and origins of mutations. In most cases, mean intervals of 20 or 25 years are used, regardless of the demographic characteristics of the population under study. Although these characteristics may vary from prehistoric to historical times, we suggest that this value is probably too low, and that the ages of some mutations may have been underestimated. Analyses were performed by using the BALSAC Population Register (Quebec, Canada), from which several intergenerational comparisons can be made. Family reconstitutions were used to measure interval lengths and variations in descending lineages. Various parameters were considered, such as spouse age at marriage, parental age, and reproduction levels. Mother-child and father-child intervals were compared. Intergenerational male and female intervals were also analyzed in 100 extended ascending genealogies. Results showed that a mean value of 30 years is a better estimate of intergenerational intervals than 20 or 25 years. As marked differences between male and female interval length were observed, specific values are proposed for mtDNA, autosomal, X-chromosomal, and Y-chromosomal loci. The applicability of these results for age estimates of mutations is discussed.
Type de document: | Article publié dans une revue avec comité d'évaluation |
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ISSN: | 00029297 |
Volume: | 66 |
Numéro: | 2 |
Pages: | p. 651-658 |
Version évaluée par les pairs: | Oui |
Date: | 2000 |
Identifiant unique: | 10.1086/302770 |
Sujets: | Sciences sociales et humaines > Sciences humaines > Histoire Sciences sociales et humaines > Sciences sociales > Démographie Sciences de la santé > Sciences médicales > Génétique |
Département, module, service et unité de recherche: | Départements et modules > Département des sciences humaines |
Mots-clés: | intergenerational intervals, generation lenght, parental age, founding mutations, genealogies, Quebec population |
Déposé le: | 19 oct. 2022 15:06 |
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Dernière modification: | 19 oct. 2022 15:06 |
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