Cited by 416Genetic Associations and EpidemiologyGenetic and phenotypic traits in livestockGenetic Mapping and Diversity in Plants and Animals

Theory and practice in quantitative genetics

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Posthuma, Daniëlle, Beem, A. Leo, de Geus, Eco J. C., van Baal, G. Caroline M., von Hjelmborg, Jacob B., Iachine, Ivan, Boomsma, Dorret I.·2003·Twin Research

Abstract

With the rapid advances in molecular biology, the near completion of the human genome, the development of appropriate statistical genetic methods and the availability of the necessary computing power, the identification of quantitative trait loci has now become a realistic prospect for quantitative geneticists. We briefly describe the theoretical biometrical foundations underlying quantitative genetics. These theoretical underpinnings are translated into mathematical equations that allow the assessment of the contribution of observed (using DNA samples) and unobserved (using known genetic relationships) genetic variation to population variance in quantitative traits. Several statistical models for quantitative genetic analyses are described, such as models for the classical twin design, multivariate and longitudinal genetic analyses, extended twin analyses, and linkage and association analyses. For each, we show how the theoretical biometrical model can be translated into algebraic equations that may be used to generate scripts for statistical genetic software packages, such as Mx, Lisrel, SOLAR, or MERLIN. For using the former program a web-library (available from http://www.psy.vu.nl/mxbib) has been developed of freely available scripts that can be used to conduct all genetic analyses described in this paper.

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  • Since both shared environmental (C) and non-additive genetic (D) influences rely on the same information (the difference between MZ and DZ twin correlations), it is impossible to estimate them simultaneously in an ACDE model using data from only twin pairs reared together.

    “Since both (C) and (D) rely on the same information (the difference between MZ and DZ twin correlations), it is impossible to estimate them simultaneously (in an ACDE model) using data from only twin pairs reared together”

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Research works printed but not linked: 6

  1. Dolan, C. V. (1992). Biometric decomposition of phenotypic means in human samples . Unpublished doctoral dissertation, University of Amsterdam, The Netherlands.
  2. Dolan, C. V., Boomsma, D. I., & Neale, M. C. (1999a). A simulation study of the effects of assigning prior IBD probabilities to unselected sib-pairs in covariance structure modeling of a QTL test. American Journal of Human Genetics, 64, 268-280.
  3. Fulker, D. W. (1988). Genetic and cultural transmission in human behavior . In B. S. Weir, E. J. Eisen, M. M. Goodman, & G. Namkoong (Eds.), Proceedings of the second international conference on quantitative genetics. Sinauer Associates Inc. Sunderland, USA.
  4. Hakonarson, H., Bjornsdottir, U. S., Halapi, E., Palsson, S., Adalsteinsdottir, E., & Gislason, D. (2002). Gene for asthma maps to chromosome 14q24. American Journal of Human Genetics, 7, 483-491.
  5. Neale, M. C. (1997). Mx: Statistical modeling (3rd ed.). Box 980126 MCV, Richmond VA 23298.
  6. Wright, S. (1921). Correlation and causation. Part 1:Method of path coefficients. Journal of Agricultural Research , 20 , 557-585.

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Authors
Posthuma, D., Beem, A. L., de Geus, E. J. C., van Baal, G. C. M., von Hjelmborg, J. B., Iachine, I., & Boomsma, D. I.
Affiliations
  • Vrije Universiteit Amsterdam (NL)
  • University of Southern Denmark (DK)
Venue
Twin Research
Published
2003-10-01
Volume
6
Issue
5
Pages
361-376
ISSN
  • 1369-0523 (ISSN-L)
  • 0000-0000
OpenAlex
W2120568930
Cited by
416
References
113
Citations by year
2026: 8 · 2025: 9 · 2024: 14 · 2023: 13 · 2022: 13 · 2021: 9 · 2020: 24 · 2019: 11 · 2018: 12 · 2017: 23 · 2016: 20 · 2015: 23 · 2014: 20 · 2013: 17 · 2012: 16
FWCI
6.52
Type
journal article
Language
en
Open access
Locations
  • Twin Research (publishedVersion)
  • PubMed (publishedVersion)
  • VU Research Portal (publishedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Digital Academic REpository of VU University Amsterdam (Vrije Universiteit Amsterdam) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
European Commission (01254)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
Keywords
quantitative genetics, quantitative trait loci, genetic variance components, multivariate genetic analysis, linkage analysis, association analysis, MX, LISREL, solar, Merlin
MeSH terms
Humans, Genetic Linkage, Mathematics, Models, Theoretical, Genetic Variation, Multivariate Analysis, Twin Studies as Topic

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