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Measuring Genetic Biodiversity

OCR AS-level BiologyBiodiversityLesson 20 of 33

Genetic biodiversity can be measured by measuring polmorphism. Polymorphic genes have more than one allele.

Most genes are not polymorphic. Most genes are monomorphic. This ensures that the basic structure and characteristic of species remains constant.

A proportion of genes are polymorphic. The greater the proportion of polymorphism, the greater the genetic biodiversity within the population.

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Key terms in this lesson

gene
A length of DNA that codes for a specific polypeptide.

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