Many multicellular eukaryotes have reasonably high per-generation mutation rates.
Consequently, most populations harbor an abundance of segregating deleterious alleles …

Sexual selection has the potential to decrease mean fitness in a population through an array
of costs to nonsexual fitness. These costs may be offset when sexual selection favors …

The effects of sexual selection on population mean fitness are unclear and a subject of
debate. Recent models propose that, because reproductive success may be condition …

Symbionts and parasites can manipulate their hosts' reproduction to their own benefit,
profoundly influencing patterns of mate choice and evolution of the host population …

While numerous theoretical population genetic models predict that mating assortatively by
genetic 'quality'will enhance the efficiency of purging of deleterious mutations and/or the …

Recent documentations of sexually antagonistic genetic variation in fitness have spurred an
interest in the mechanisms that may act to maintain such variation in natural populations …

Sexually dimorphic traits are by definition exaggerated in one sex, which may arise from a
history of sex-specific selection—in males, females, or both. If this exaggeration comes at a …

It is increasingly realized that the potential for male mate choice is widespread across many
taxa. However, measurements of the relative magnitude of the fitness benefits that such …

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Variation in environmental or genetic quality leads to phenotypic variation in condition, but
how much variation in fitness is created by this variation in condition? Using Drosophila …