Polymorphism is the term used to describe a population with a wide range of different alleles. The diversity of alleles and genotypes within a population is called genetic variance. Individuals of a population often display different phenotypes, or express different alleles of a particular gene, referred to as polymorphisms.

Polymorphism is an important concept in genetics and evolutionary biology. It is the basis for natural selection and the evolution of species. Genetic variation within populations is essential for adaptation to changing environments and for the survival of species.

I hope this helps you with your article. Here are some websites that discuss A Population Has A Wide Range Of Different Alleles. What Is This Called?:
- [Wikipedia](https://en.wikipedia.org/wiki/Human_genetic_variation)
- [Biology LibreTexts](https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_%28OpenStax%29/4%3A_Evolutionary_Processes/19%3A_The_Evolution_of_Populations/19.2%3A_Population_Genetics)
- [BBC Bitesize](https://www.bbc.co.uk/bitesize/guides/zcqbdxs/revision/6)
- [Khan Academy](https://www.khanacademy.org/science/ap-biology/natural-selection/hardy-weinberg-equilibrium/a/allele-frequency-the-gene-pool)

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