gene duplication (might give advantages)
genetic drift, mutation, natural selection, and migration
Differential selection is just that, differential. Some variation is marginally superior to another variation us fitness difference, so the key is to have variation. Then natural selection will " see " this slight variation and select the better adapted trait against the background of the immediate environment.
Natural selection and evolution occur when individuals within a population vary in traits that affect their survival and reproduction. Traits that increase an individual's likelihood of survival and reproduction are passed on to the next generation, leading to the accumulation of beneficial traits in the population over time. This process drives the adaptation of populations to their environments.
1. different breeding 2. evolution 3.adaptation
by having sexual intercourse with hoes and getting money
Because it was Darwin who made it a scientifically plausible explanation, by providing a mechanism by which evolution could occur....Natural Selection.
Yes, cultural evolution can occur much faster than biological evolution because cultural traits can be rapidly spread and adopted among populations through communication, imitation, and technology, whereas biological evolution relies on genetic changes that accumulate over generations through the process of natural selection. This allows cultural adaptations to occur more rapidly in response to changing environments or social needs.
The unit of evolution depends on the level at which genetic variation is passed on to the next generation. This can occur at the level of individuals, populations, or species. The unit of selection is the entity on which natural selection acts to drive evolutionary change.
In the sense that genetic diversity is the raw material on which natural selection acts. The variant selected has progeny that may shift the allele frequency in a population of organisms over time, thus leading to evolution.
If there is not reproductive fitness conveyed by a variant trait, then natural selection has nothing to select and nothing to promote into the populational gene pool.
Yes, that is what Darwin thought. However this has never been shown to be true.