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Understanding Cancer Series

  • Posted: 12/29/2009

Slide 14

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Genotypes and Phenotypes

In order to understand some additional contributors to a person's genetic background, one must understand terms like genotype, phenotype, and alleles. Cancer may start as a new genotype, that is, as a change in the genetic makeup of a person, but it ultimately produces a new phenotype as well. A phenotype is the physical manifestation of a genotype in the form of a trait or disease. Cancer is known for its ever-changing genotypes and phenotypes.

Graphic shows how a genotype is a change in the genetic makeup of a person, but a phenotype is the physical manifestation of the genotype in the form of a trait or disease.