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What comes first mutation or natural selection?
Natural selection can only work on genetic variation that already exists. So mutation comes first, then natural selection.
How does natural selection work for or against an organism?
Natural selection reduces the number of fertile offspring an organism may raise.
Why does natural selection work on organisms phenotypes rather than their genotypes?
This is backward, natural selection works on genotype not phenotype.
How much natural selection leads to evolution?
All natural selection results in evolution. But natural selection is not necessarily the only mechanism leading to evolution. There are processes at work on a molecular level, such as intragenomic conflict-type processes, that also result in differential reproductive success, but aren't exactly related to the kind of processes Darwin first described.
Does natural selection work on a variation already present in a population?
Yes.
Why was Charles Darwin work important?
because he created the natural selection
What is natural selection and what is affecting it?
Natural selection is way that evolution works. Whatever is in the environment selects traits that will work best in that environment. If the area that animals are in is very dry, only those that can adapt to it will survive. If it is very cold, only ones with heavy fur or the ability to hibernate will survive. This why it is called the survival of the fittest.
Time why does natural selection continue to work?
Natural selection creates a stronger species that is able to live longer and produce more. It continues to work because after a few generations, the traits will become common in the population.
Is natural selection the only force that drives biological evolution?
No. Natural selection requires reproductive variation to work on. Besides reproductive variation and natural selection, there are various forces, biochemical as well as population dynamical, that affect the allelic composition of a population.
Why does natural selection continue work over time?
Natural selection creates a stronger species that is able to live longer and produce more. It continues to work because after a few generations, the traits will become common in the population.
Who proposed a theory of evolution by natural selection similar to Darwin?
Alfred Russel Wallace, a contemporary of Charles Darwin, independently proposed a theory of evolution by natural selection that was similar to Darwin's. Wallace's work on natural selection prompted Darwin to publish his own views on the subject. The two scientists jointly presented their work in a paper in 1858.
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.
