The phrase "acting variation" is correct and usable in written English.
It can be used in contexts related to performance, behavior, or changes in actions, often in discussions about acting techniques or character portrayals.
Example: "The actor's ability to showcase an acting variation in his performance added depth to the character."
Alternatives: "performance variation" or "behavioral variation".
In essence, a consensus was reached among biologists (sensu lato) that Darwinian natural selection acting on variation arising from random mutation was a sufficient mechanism to explain evolutionary change.
Evolution consists of gradual changes passed on through many generations through natural selection acting on variation.
Enduring Understanding: (What students will remember after the lesson is over) Evolution consists of gradual changes passed on through many generations through natural selection acting on variation.
Darwin and Wallace are well known for recognizing the force of nature acting upon variation, through their theory (law) of natural selection.
In conclusion, we infer that gene order in the C. reinhardtii plastid evolved in a non-random fashion, and hypothesize that genome structure has been influenced by directional selection acting on variation generated by an increased rate of rearrangement.
Key among population genetic parameters is the effective population size, N e, which determines the efficacy of selection relative to genetic drift acting on variation within a species (Charlesworth 2009).
Because the most deleterious mutations are expected to be ephemeral (Fu et al. 2013; Kiezun et al. 2013), in order to accurately quantify the mutational effect of the repetitive sequences and the selection acting on variation surrounding these regions, the analysis needs to focus on the comparison of closely related species or individuals within the same species.
There is no significant correlation between any pair of traits and thus no evidence for shared variation acting on mutant hINS and two eye-development-specific mutants.
Cis-acting variation in the expression of a high proportion of genes in human brain.
