The phrase "a fitness effect" is correct and usable in written English.
It can be used in contexts related to biology, health, or exercise, often referring to the impact of a particular activity or trait on an organism's fitness or survival.
Example: "The study aimed to determine the fitness effect of different exercise regimens on overall health."
Alternatives: "a health impact" or "a performance outcome".
This small effective population size implies that deleterious (beneficial) mutations with a fitness effect greater than ∼0.097 would be underrepresented (overrepresented) due to the action of selection (Hall et al. 2008; Lynch et al. 2008).
"If we wait to show a fitness effect, it may already be too late to turn things around".
A statistical power analyses revealed that the minimum sample sizes required for detecting significant fitness differences between EVC and WT was 2 3 orders of magnitude larger than the 10 replicates required to detect a fitness effect of TPI silencing.
More difficult however is to ascribe the specific selective forces acting on this GSL variation to produce a fitness effect.
Whole-genome sequencing of several evolved clones also identified a beneficial point mutation with a fitness effect less than that conferred by the amplification of SUL1.
The second involves a comparison of the number of synonymous substitutions (assumed to be neutral) with the number of nonsynonymous substitutions (assumed to have a fitness effect).
Finally, a mutation that compensates for a deleterious fitness effect caused by a primary drug-resistance mutation can also be distinguished by K a / K s analysis [ 31].
For the case of nonstructured populations in the absence of clonal interference, it is known that the probability of fixation of a mutant with a small fitness effect s is equal to 2 s (Haldane 1927; Kimura 1962).
That is, acquisition of a highly expressed gene is expected to have a greater fitness effect than that of a lowly expressed gene.
We speculated that a negative fitness effect due to a copy-number variation will increase the likelihood of subsequent removal of that CNV from the gene pool.
We thus excluded those overlapping genes, when testing for an enrichment of genes with a negative fitness effect upon deletion in cores.
