Abstract
The decomposition of genetic variance into additive, dominance, and epistatic components is a common procedure in quantitative genetics. Yet, the interpretation of this variance partition is not trivial, especially concerning nonadditive components. In this chapter, we compile various uses of variance partitioning from published analyses, new simulations, and theoretical examples. We show ways in which advanced genetic modeling facilitates the analysis of data through variance partitioning, focusing on the natural and orthogonal interactions (NOIA) model. We also discuss how epistasis and epistatic variance may influence the outcome of selection, a topic that is still a matter of debate among quantitative and evolutionary geneticists.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Fisher RA (1918) The correlation between relatives on the supposition of Mendelian inheritance. Trans R Soc Edinburgh 52:339–433
Falconer DS, MacKay TFC (1996) Introduction to quantitative genetics, 4th edn. Prentice Hall, Harlow
Galton F (1886) Regression towards mediocrity in hereditary stature. J R Anthropol Inst Great Brit Ireland 15:246–263
Avery OT, MacLeod CM, McCarty M (1944) Studies on the chemical nature of the substance inducing transformation of pneumococcal types induction of transformation by a desoxyribonucleic acid fraction isolated from pneumococcus type ii. J Exp Med 79:137–158
Franklin R, Gosling RG (1953) Molecular configuration in sodium thymonucleate. Nature 171:740–741
Watson JD, Crick FHC (1953) A structure for deoxyribose nucleic acid. Nature 171:737–738
Thoday JM (1961) Location of polygenes. Nature 191:368–370
Lander ES, Botstein D (1989) Mapping mendelian factors underlying quantitative traits using RFLP linkage maps. Genetics 121(1):185–199
Travisano M, Shaw RG (2013) Lost in the map. Evolution 67(2):305–314
Cheverud JM (2000) Detecting epistasis among quantitative trait loci. In: Wolf JB, Brodie ED, Wade MJ (eds) Epistasis and the evolutionary process. Oxford University Press, Oxford, pp 58–81
Cheverud JM, Routman EJ (1995) Epistasis and its contribution to genetic variance components. Genetics 139(3):1455–1461
Hansen TF, Wagner GP (2001) Modeling genetic architecture: a multilinear theory of gene interaction. Theor Popul Biol 59(1):61–86
Kao CH, Zeng ZB (2002) Modeling epistasis of quantitative trait loci using Cockerham's model. Genetics 160(3):1243–1261
Mao Y, London NR, Ma L, Dvorkin D, Da Y (2006) Detection of SNP epistasis effects of quantitative traits using an extended Kempthorne model. Physiol Genomics 28(1):46–52
Yang R-C (2004) Epistasis of quantitative trait loci under different gene action models. Genetics 167(3):1493–1505
Kempthorne O (1954) The correlation between relatives in a random mating population. Proc R Soc Lond B Biol Sci 143(910):102–113
Cockerham CC (1954) An extension of the concept of partitioning hereditary variance for analysis of covariances among relatives when epistasis is present. Genetics 39:859–882
Álvarez-Castro JM, Carlborg Ö (2007) A unified model for functional and statistical epistasis and its application in quantitative trait loci analysis. Genetics 176(2):1151–1167
Álvarez-Castro JM, Carlborg O, Ronnegard L (2012) Estimation and interpretation of genetic effects with epistasis using the NOIA model. Methods Mol Biol 871:191–204
Álvarez-Castro JM, Yang R-C (2011) Multiallelic models of genetic effects and variance decomposition in non-equilibrium populations. Genetica 139(9):1119–1134
Le Rouzic A, Álvarez-Castro JM (2008) Estimation of genetic effects and genotype-phenotype maps. Evol Bioinform 4:225–235
Kempthorne O (1957) An introduction to genetic statistics. Wiley, New York
Lynch M, Walsh B (1998) Genetic analysis of quantitative traits. Sinauer, Sunderland
Yang R-C, Álvarez-Castro JM (2008) Functional and statistical genetic effects with miltiple alleles. Curr Top Genet 3:49–62
Álvarez-Castro JM (2012) Current applications of models of genetic effects with interactions across the genome. Curr Genomics 13(2):163–175
Burke JM, Arnold ML (2001) Genetics and the fitness of hybrids. Annu Rev Genet 35:31–52
Dobzhansky T (1936) Studies on hybrid sterility. II. Location of sterility factors in Drosophila pseudoobscura hybrids. Genetics 21:113–135
Wilder JA, Hammer MF (2004) European ACP1*C allele has recessive deleterious effects on early life viability. Hum Biol 76(6):817–835
Brinkmann B, Hoppe HH, Hennig W, Koops E (1971) Red cell enzyme polymorphisms in a northern German population. Gene frequencies and population genetics of the acid phosphatase (AP), phosphoglucomutase (PGM), adenylate kinase (AK), adenosine deaminase (ADA) and 6-phosphogluconate dehydrogenase (6-PGD). Hum Hered 21(3):278–288
Greene LS, Bottini N, Borgiani P, Gloria-Bottini F (2000) Acid phosphatase locus 1 (ACP1): possible relationship of allelic variation to body size and human population adaptation to thermal stress – a theoretical perspective. Am J Hum Biol 12(5):688–701
Álvarez-Castro JM, Le Rouzic A, Andersson L, Siegel PB, Carlborg O (2012) Modelling of genetic interactions improves prediction of hybrid patterns – a case study in domestic fowl. Genet Res (Camb) 94(5):255–266
Marquez GC, Siegel PB, Lewis RM (2010) Genetic diversity and population structure in lines of chickens divergently selected for high and low 8-week body weight. Poult Sci 89(12):2580–2588
Kerje S, Carlborg Ö, Jacobsson L, Schutz K, Hartmann C, Jensen P, Andersson L (2003) The twofold difference in adult size between the red junglefowl and White Leghorn chickens is largely explained by a limited number of QTLs. Anim Genet 34(4):264–274
Zuk O, Hechter E, Sunyaev SR, Lander ES (2012) The mystery of missing heritability: genetic interactions create phantom heritability. Proc Natl Acad Sci U S A 109(4):1193–1198
Kimura M, Crow JF (1978) Effect of overall phenotypic selection on genetic change at individual loci. Proc Natl Acad Sci U S A 75(12):6168–6171
Barton NH, Turelli M (2004) Effects of genetic drift on variance components under a general model of epistasis. Evolution 58(10):2111–2132
Turelli M, Barton NH (2006) Will population bottlenecks and multilocus epistasis increase additive genetic variance? Evolution 60(9):1763–1776
Templeton AR (2006) Population genetics and microevolutionary theory. Wiley-Liss, Hoboken, NJ
Hemani G, Knott S, Haley C (2013) An evolutionary perspective on epistasis and the missing heritability. PLoS Genet 9(2):e1003295
Shen X (2013) The curse of the missing heritability. Front Genet 4:225
Gjuvsland AB, Vik JO, Woolliams JA, Omholt SW (2011) Order-preserving principles underlying genotype-phenotype maps ensure high additive proportions of genetic variance. J Evol Biol 24(10):2269–2279
Hallander J, Waldmann P (2007) The effect of non-additive genetic interactions on selection in multi-locus genetic models. Heredity 98(6):349–359
Sellis D, Callahan BJ, Petrov DA, Messer PW (2011) Heterozygote advantage as a natural consequence of adaptation in diploids. Proc Natl Acad Sci U S A 108(51):20666–20671
Hansen TF (2013) Why epistasis is important for selection and adaptation. Evolution 67(12):3501–3511
Weinreich DM, Watson RA, Chao L (2005) Perspective: sign epistasis and genetic constraint on evolutionary trajectories. Evolution 59(6):1165–1174
Carter AJ, Hermisson J, Hansen TF (2005) The role of epistatic gene interactions in the response to selection and the evolution of evolvability. Theor Popul Biol 68:179–196
Houle D, Pelabon C, Wagner GP, Hansen TF (2011) Measurement and meaning in biology. Q Rev Biol 86(1):3–34
Pavlicev M, Le Rouzic A, Cheverud JM, Wagner GP, Hansen TF (2010) Directionality of epistasis in a murine intercross population. Genetics 185(4):1489–1505
Acknowledgements
We acknowledge funding from grants BFU2010-20003 and EM2014/024 from the now defunct Spanish Ministry of Science and Innovation and the autonomous administration Xunta de Galicia, respectively, to J.A.C. and by grant ERT 256507 from the European Research Council to A.L.R. We thank Estelle Rünneburger for helpful comments on the manuscript.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer Science+Business Media New York
About this protocol
Cite this protocol
Álvarez-Castro, J.M., Le Rouzic, A. (2015). On the Partitioning of Genetic Variance with Epistasis. In: Moore, J., Williams, S. (eds) Epistasis. Methods in Molecular Biology, vol 1253. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2155-3_6
Download citation
DOI: https://doi.org/10.1007/978-1-4939-2155-3_6
Published:
Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-2154-6
Online ISBN: 978-1-4939-2155-3
eBook Packages: Springer Protocols