variation,overproduction, and competition
natural selection
Adaptation is the result of natural selection.
by natural selection.
Yes, natural selection is always occurring.
Natural selection can only work on genetic variation that already exists. So mutation comes first, then natural selection.
Populations evolve, but individuals are selected. Natural selection affects individual organisms.
Variation in the organisms under selection. In both artificial selection and natural selection there must be heritable variations that have the possibility of being in the case of artificial selection what the selector wants in the organism and in thje case of natural selection survivability and reproductive advantages.
Probably natural selection. The environment is the selector of organisms.
Genes are the medium by which inherited traits are passed on to offspring. It is inherited traits, and thus genes, that receive positive or negative selection.
Its NaTuRaL sElEcTiOn if you didn't know.
natural selection
Adaptation does not allow for natural selection: natural selection causes adaptation.
In one way or another, all of them. However, we generally don't speak of natural selection in terms of how it affects cells (except perhaps germline cells), but in terms of how it affects populations, lineages or allele frequencies in gene pools. In population genetics, cells are merely the containers for collections of genes, and the machines that express those genes.
natural selection and heredity Americans are affected with sickle cell anaemia which mostly affects black people.
Genetic variation in itself does not 'support' natural selection: it is what natural selection acts upon.
Natural selection is what causes adaptation.
No, natural selection is the mechanism that drivesevolution.