What are the 2 main sources of genetic variation?
For a given population, there are three sources of variation: mutation, recombination, and immigration of genes.
However, recombination by itself does not produce variation unless alleles are segregating already at different loci; otherwise there is nothing to recombine..
What are the two main sources of genetic variation quizlet?
The two main sources of genetic variation are mutation and recombination.
What are two sources of genetic variation in meiosis?
8. Describe the three ways meiosis produces genetic variability. We have seen that meiosis creates variation three ways: crossing over, mutations caused during crossing over, and independent assortment.
What are the two causes of variation?
Major causes of variation include mutations, gene flow, and sexual reproduction. DNA mutation causes genetic variation by altering the genes of individuals in a population. Gene flow leads to genetic variation as new individuals with different gene combinations migrate into a population.
What are the 5 sources of genetic variation?
Genetic Variationmutation.random mating between organisms.random fertilization.crossing over (or recombination) between chromatids of homologous chromosomes during meiosis.
Where does genetic variation come from?
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.