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Variation and competition are the basis of natural selection.
When a population of organisms has variety (big/small, fast/slower, etc), and there is competition, then some of those traits will assist in winning the competition, and some will not, which will tend to mean the difference between an organism surviving versus not surviving, which in a large population will mean passing the genes for those advantageous traits on, which then means that those traits have been 'selected' for by the natural act of competition, thus 'natural selection'.
What else can I help you with?
In order for evolution by natural selection to occur what has to happen?
There must be genetic variation, the variation must be heritable, and there must be differential reproduction (due to competition).
How does genetic variation support Natural Selection?
Genetic variation in itself does not 'support' natural selection: it is what natural selection acts upon.
What is the 4 main points of natural selection?
natural selection (4 tenants) -genetic variation -overproduction of offspring -struggle for existence (competition) -differential survival and reproduction
What characteristic within populations cause natural selection to occur?
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
When will natural selection occur?
when there is competition
What principles includes variation and competition?
Natural selection.
What principals include variation and competition?
Natural selection.
In order for evolution by natural selection to occur what has to happen?
There must be genetic variation, the variation must be heritable, and there must be differential reproduction (due to competition).
How does genetic variation support Natural Selection?
Genetic variation in itself does not 'support' natural selection: it is what natural selection acts upon.
What is the 4 main points of natural selection?
natural selection (4 tenants) -genetic variation -overproduction of offspring -struggle for existence (competition) -differential survival and reproduction
What affects selection?
variation,overproduction, and competition
Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
Which of these is necessary for natural selection to occur genetic engeneering genetic variation asexual reproduction or enviormental stability?
Genetic variation is necessary for natural selection to occur. This variation provides the raw material for differential survival and reproduction, which drives the process of natural selection. Without genetic variation, there would be no differences for natural selection to act upon.
Can natural selection occur without variation in a population?
no there is no genetic variation for natural selection to act upon
What characteristic within populations cause natural selection to occur?
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
When will natural selection occur?
when there is competition
How does natural selection enhance or reduce the variability of a species?
Natural selection doesn't reduce variation. Variation is regulated by the rate of mutation.Natural selection reduces the chance of bad variation from being passed on and increases the chances for good variation to be passed on.
