What is the meaning of genetic polymorphism

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What is the Meaning of Genetic Polymorphism?

Genetic polymorphism is a term used to describe the presence of two or more different forms of a gene in a population. It is a common phenomenon in nature, and it is often the result of natural selection. Polymorphism can have a major impact on the evolution of a species, as it can lead to the emergence of new traits and characteristics.

Polymorphism is a result of genetic variation. Genes are made up of sequences of nucleotides that code for specific proteins. Different versions of the same gene are known as alleles. Alleles can vary in their sequence, which can result in different forms of the same gene. For example, a gene might have two alleles, one of which codes for a protein that is active in the body, while the other is inactive.

Polymorphism occurs when two or more different alleles of a gene are present in a population. This can occur due to natural selection or random genetic drift. Natural selection is the process by which certain traits become more common in a population over time. Traits that are beneficial to an organism’s survival and reproduction will become more common, while those that are detrimental will become less common. Random genetic drift is the process by which certain traits become more or less common in a population due to chance.

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Polymorphism can have a major impact on the evolution of a species. It can lead to the emergence of new traits and characteristics that can be beneficial in a particular environment. For example, a gene that codes for a protein that helps an organism survive in a particular environment might become more common if it is beneficial in that environment.

Polymorphism can also lead to the emergence of diseases. Alleles that are associated with disease can become more common in a population if they are beneficial in some way. For example, an allele that codes for a protein that helps an organism survive in a particular environment might become more common if it also increases the risk of a particular disease.

In conclusion, genetic polymorphism is a term used to describe the presence of two or more different forms of a gene in a population. It is a common phenomenon in nature, and it can have a major impact on the evolution of a species. Polymorphism can lead to the emergence of new traits and characteristics, as well as the emergence of diseases.

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