Genetic variation

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Genetic Variation is the range of change in DNA sequence in the genomes of a living species. Although a population of a species will have the same set of genes, it is the the individual Alleles which give the genetic variation.

There are 2 different types of variation classification in populations:

Continuous Discontinuous

In Discontinuous variation, a change in two or more separate forms in a population are called phenotypes

The genetic variation of the sequence/gene is called a mutant, whilst the original sequence is known as the wild type[1].


  1. Griffiths AJF, Miller JH, Suzuki DT, et al .An Introduction to Genetic Analysis. 7th edition, New York: W. H. Freeman; 2000.
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