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The ultimate source of genetic variability is the imperfect replication of DNA. DNA polymerase does not always incorporate the correct base when DNA...


The ultimate source of genetic variation is differences in DNA sequences. Most genetic differences result in variations that do not adversely affect us. Some differences however result in disease. Some variations in fact provide some organisms with a survival advantage. ...


These mutations are not only an additional source of variation, they are the ultimate source of all genetic variation. Variation in a population means that some individuals have a better chance ...


Mutations are changes in DNA sequence that can create genetic variation within the population and thus are the ultimate source of new alleles . Mutations are important for evolution because of their ability to form a new genetic variant (allele) that can be spread to the offspring.


The ultimate source of genetic variation is differences in DNA sequences. Most of those genetic differences do not affect how individuals function. Some genetic variation, however, is associated with disease, and some improves the ability of the species to survive changes in the environment.


Genetic variation can be defined as the genetic makeup of organisms within a population change.Genes are inherited segments of DNA that contain codes for the production of proteins. Genes exists in alternate versions, or alleles that determine distinct traits that can be passed on from parents to offspring.


Genetic variation comes from sex combinations and minor mutations (something minor like if you're taller than anyone else in your family - a major mutation is typically deadly to the organism or doesn't readily spread) and it's the changes in nature that "select" what traits survive.


1. Genetic drift 2. Natural selection II. How important is each of these forces on evolutionary change and what effect does each agent have on genetic variation. A. Mutation 1. Mutations are the ultimate source of variants. 2. Rates are very small. 3. Change in allele frequency over time depends on mutation rate of A----> a. a.


Genetic variation must exist for natural selection to occur the ultimate source of genetic variation is mutations once variation exists, it can be affected by independent assortment and genetic recombination during gamete formation consider the cross AaBb x AaBb – 9 different genotypes arise .


7. There are several sources of genetic variation. We will look at several. What is the ultimate source of new alleles? The ultimate source of new alleles is mutation. 8. Mutations are any change in the nucleotide sequence of an organism’s DNA. These mutations provide the raw material from which new traits may arise and be selected.