Gene Polymorphisms and Chromosomal Abnormalities Lecture

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What is a polymorphism in genetics?

A DNA sequence variation that is common in the population

Define Single Nucleotide Polymorphisms (SNPs).

The most common type of gene polymorphism, involving a variation in a single nucleotide base.

What causes Insertion-Deletion Polymorphisms (Indels)?

They are caused by the insertion or deletion of anywhere from a single base pair (bp) up to approximately 1000 bps.

Describe Microsatellite Polymorphisms.

<p>Stretches of DNA composed of units of 2, 3, or 4 nucleotides, repeated between one and a few dozen times at a particular site in the genome.</p> Signup and view all the answers

How can Microsatellite Polymorphisms be evaluated in the laboratory?

<p>They can be rapidly evaluated by standard laboratory procedures to distinguish different individuals and to infer familial relationships.</p> Signup and view all the answers