Approximate and exact tests of Hardy-Weinberg equilibrium using uncertain genotypes.

ABSTRACT: Testing for Hardy-Weinberg equilibrium (HWE) is commonly used as a quality control filter in genome-wide scans for markers with experimentally determined genotypes. In contrast, for markers with imputed genotypes, there are post-imputation metrics of quality that can be used as screens but there are no formal tests of deviation from HWE. Similarly, there are no formal tests of deviation from HWE for probabilistic genotypes that are generated by sequencing projects. Here, I describe generalizations of the approximate χ(2) and exact tests of HWE for use with uncertain genotypes. The tests fully account for the probabilities of all possible genotypes at a marker for each individual. By computer simulation, the approximate and exact tests are shown to maintain valid control of the type I error

SUBMITTER: Shriner D 

PROVIDER: S-EPMC4141651 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature