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Trends Genet. 1999 Jul;15(7):261-6.

Suppression mechanisms: themes from variations.

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Department of Molecular Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York, NY 10461, USA.


Suppressor analysis is a commonly used strategy to identify functional relationships between genes that might not have been revealed through other genetic or biochemical means. Many mechanisms that explain the phenomenon of genetic suppression have been described, but the wide variety of possible mechanisms can present a challenge to defining the relationship between a suppressor and the original gene. This article provides a broad framework for classifying suppression mechanisms and describes a series of genetic tests that can be applied to determine the most likely mechanism of suppression.

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