Some of Our DNA Polymerases Have a Proofreading Function

question 29

Essay

Some of our DNA polymerases have a proofreading function. What is meant by this and how common is it.

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Definitions:

Frequency-Dependent Selection

A form of natural selection where the fitness of a phenotype depends on its frequency relative to other phenotypes in the population.

Clone Genotypes

Replicating the genetic makeup of an organism to create a genetic duplicate, leading to individuals with identical genotypes.

Heterozygote Advantage

Occurs when selection favors heterozygote individuals over either the dominant homozygote or the recessive homozygote.

Sickle-Cell Anemia

A genetic blood disorder caused by the presence of an abnormal form of hemoglobin, leading to distorted (sickle-shaped) red blood cells.