Mutation is the primary process that directly contributes to genetic variation by introducing new alleles into a population. Recombination during meiosis, where genetic material is shuffled and exchanged between homologous chromosomes, also plays a role in generating genetic diversity. Independent assortment during meiosis further contributes to genetic variation by producing unique combinations of maternal and paternal chromosomes in gametes.
The two main sources of genetic variation are gene shuffling and mutations. A mutation is a process wherein the structure of a gene is altered.
Fertilization contributes to genetic variation by combining the genetic material from two parents to create a unique genetic makeup in offspring. The inheritance of specific genes from each parent determines the traits and characteristics of the offspring.
Loss of genetic variation(:Novanet:)
the genes that code for RNA and proteins...............
Human recombination is a significant source of genetic variation.
mutations cause genetic variation, and vice-versa. If there is a genetic variation (or lack of one), then this can effect the severity of the mutation.
Bacteria increase genetic variation through mechanisms such as mutation, horizontal gene transfer, and genetic recombination. Mutations can introduce new genetic variations, while horizontal gene transfer allows bacteria to exchange genetic material with other bacteria and acquire new genes. Genetic recombination, through processes like conjugation and transformation, also contributes to genetic diversity in bacteria.
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.
No, natural selection works on that genetic variation presented to it.
genetic and environmental variation
The process responsible for genetic variation is genetic recombination, which occurs during meiosis when genetic material is exchanged between homologous chromosomes. Mutations, which are changes in the DNA sequence, also contribute to genetic variation.