What is the ultimate source of new variation in a population?
Mutation is the ultimate source for genetic variation that serves as raw material for evolution. In multicellular organisms, only mutations in cells that produce gametes can be passed to offspring and affect a population's genetic variability.
What is the greatest source of variation?
Although mutation is the only way of producing new variants of single genes, recombination, brought about through sexual reproduction, produces more new types of individuals much faster than mutation. In eukaryotic organisms, therefore, recombination is the greatest source of variation.
What is the source of variations?
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.
Why mutation is the ultimate source of genetic variation?
Mutation plays an important role in evolution. The ultimate source of all genetic variation is mutation. Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.