Intergenomic conflict revealed by patterns of sex-biased gene expression.
Intergenomic conflict can affect the distribution of genes across eukaryotic genomes. Because the phenotypic optima of males and females often differ, the fitness consequences of newly arisen alleles might not be concordant between the sexes and can be sexually antagonistic--genetic variants favored in one sex are deleterious in the other. In this article, we demonstrate that previously unexplained patterns of sex-biased gene expression in Drosophila melanogaster might have evolved by sexual antagonism, and that the majority of sex-biased expression is due to adaptive changes in males, implying that males experience stronger selection than females.
Connallon
Tim
T
Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI 48109-1079, USA.
Knowles
L Lacey
LL
D000818:Animals; D004330:Drosophila / Q000235:genetics* / Q000502:physiology; D005260:Female; D020869:Gene Expression Profiling; D017344:Genes, Insect; D008297:Male; D020411:Oligonucleotide Array Sequence Analysis; D012727:Sex Characteristics; D012744:Sex Ratio