A fitness advantage therefore exists in deploying defense mechanisms selectively only when the potential benefits outweigh such costs.

Its modified variant, or allele, appeared to confer a fitness advantage on those who possessed it.

One possible interpretation of this is that interpopulation mating confers a fitness advantage.

Being apathetic can have a fitness advantage for the organism.

Allowing the barnacle species to distribute themselves throughout global waters is a high fitness advantage of this commensalism.

These were among the first rigorous demonstrations in any organism of a fitness advantage conferred by a circadian system.

A neutral mutation does not bring any fitness advantage or disadvantage to its bearer.

In certain cases, the duplication of a certain gene might be immediately beneficial, providing its carrier with a fitness advantage.

His methods were considered rather old-fashioned, but often gave his charges a fitness advantage in the early part of the season.

What is the offsetting fitness advantage of this motile cell stage?