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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.

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15y ago

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Why does evolution evolution by natural selection can not occur if the variation in a characteristic does not contribute to differences in fitness?

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.


What conditions contribute to evolution?

Variability, heredity, and natural selection are 3 main things that contribute to evolution.


How does natural selection contribute to biological evolution?

Selection is not always of the most fit to survive.


How do mutations natural selection geographic isolation genetic drift and migration contribute to biological evolution?

they contribute to biological evolution by how they've affected the evolution rate by increasing it or decreasing it


How environmental factors contribute to evolution by natural selection.?

Environmental factors ARE evolution by natural selection. The immediate environment is the selector of the organisms that are differentially successful against the immediate environment.


Evolution by natural selection works best on populatin having no variation?

Evolution by natural selection actually relies on variation within a population. Without variation, there would be no genetic differences for natural selection to act upon, leading to no evolution. Variation provides the raw material for natural selection to work with, allowing beneficial traits to be favored and passed on to future generations.


What characteristic of living things is associated with evolution?

The characteristic of living things most associated with evolution is physical change. According to the theory of evolution, as living things evolve, they experience a number of physical changes to adapt to their environment.


When natural selection favors the intermediate version of a characteristic it is called what?

It is called evolution. After all, all characteristics, as far as evolution is concerned, are intermediate. They're all temporary variants, on their way to becoming something else.


Is natural selection a cause of evolution?

No, natural selection is believed to result in evolution.


How does a characteristic that contributes to few or no offspring not become more common as a result of evolution by natural selection?

The question answers itself: the characteristic is passed onto few or no offspring, and therefore will not spread throughout the population.


Can natural selection exist with out evolution?

Perhaps not, but evolution can exist without natural selection.


What is another word for Darwin's theory of natural selection?

Evolution by natural selection.