In quantitative genetics, it is often assumed that genetic effects at different loci are additive. At each locus, the effect of the homozygous genotype is called an additive effect, and the model that decomposes the genotype value into an additive effect is an additive model, including the parental additive model, the BSAM and ASGM model, additive single-step model, etc.

• Ashley Hutt
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