Name 2 processes that could result in variation in a population and why?...Explain the two and their actual causes in variation.
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Two causes of population variation are natural selection and genetic mutation. Natural selection is a non random force that filters a species to leave only the best species from an evolutionary stand point. Genetic mutations are random and can cause slight variations.
oh, thank you very much. but um, how does genetic mutations cause variation?
There are different types of genetic mutations. Missense, Nonsense, and silent mutations. A non sense mutation will cause a change in the nucleotides so that it makes no sense at all and does not code for any amino acids. That causes whatever gene that coded for to be dysfunctional. A silent mutation is, as the name implies, silent. Although there was a change in nucleotides, the new nucleotide sequence codes for the same amino acid as it originally did. But what mutation that might cause variation is a missense mutation. These mutations have a change in nucleotides that still code for a functional amino acid, but it's a different amino acid than the original sequence coded for. So for instance if a gene coded for some trait, and a missense mutation caused a change to a new amino acid, this might create a new trait.