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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2018 ; 9
(1
): 2750
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Gene expression drives the evolution of dominance
#MMPMID30013096
Huber CD
; Durvasula A
; Hancock AM
; Lohmueller KE
Nat Commun
2018[Jul]; 9
(1
): 2750
PMID30013096
show ga
Dominance is a fundamental concept in molecular genetics and has implications for
understanding patterns of genetic variation, evolution, and complex traits.
However, despite its importance, the degree of dominance in natural populations
is poorly quantified. Here, we leverage multiple mating systems in natural
populations of Arabidopsis to co-estimate the distribution of fitness effects and
dominance coefficients of new amino acid changing mutations. We find that more
deleterious mutations are more likely to be recessive than less deleterious
mutations. Further, this pattern holds across gene categories, but varies with
the connectivity and expression patterns of genes. Our work argues that dominance
arises as a consequence of the functional importance of genes and their optimal
expression levels.