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Dominance and multi-locus interaction

delete2024-04-01
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李娟 cover
李娟 (Juan Li) *
C
Claudia Bank
DOI:10.1016/j.tig.2023.12.003delete
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Abstract

Abstract

En 中文
Dominance is usually considered a constant value that describes the relative difference in fitness or phenotype between heterozygotes and the average of homozygotes at a focal polymorphic locus. However, the observed dominance can vary with the genetic background of the focal locus. Here, alleles at other loci modify the observed phenotype through position effects or dominance modifiers that are sometimes associated with pathogen resistance, lineage, sex, or mating type. Theoretical models have illustrated how variable dominance appears in the context of multi -locus interaction (epistasis). Here, we review empirical evidence for variable dominance and how the observed patterns may be captured by proposed epistatic models. We highlight how integrating epistasis and dominance is crucial for comprehensively understanding adaptation and speciation.
Keywords:
SEX-DEPENDENT DOMINANCE
GENETIC DOMINANCE
FISHERS THEORY
EVOLUTION
DROSOPHILA
EPISTASIS
FITNESS
RESISTANCE
SPECIATION
INHERITANCE
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Journal

Trends in Genetics cover
Trends in Genetics
IF:
16.3
Papers:
3.4K
Citations:
1.5W

Organization

U
University of Bern
Scholars:
3.9W
Papers: 3.1W
Citations: 4.8W