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Hardy–Weinberg quality control

Published online by Cambridge University Press:  01 November 1999

I. GOMES
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
A. COLLINS
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
C. LONJOU
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
N. S. THOMAS
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
J. WILKINSON
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
M. WATSON
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
N. MORTON
Affiliation:
Human Genetics, University of Southampton, Duthie Building, Southampton General Hospital, Tremona Road, Southampton, U.K.
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Abstract

An efficient test of deviation from Hardy–Weinberg frequencies with one degree of freedom was applied to 44 marker loci in a genome scan, and 7 loci had a significant excess of apparent homozygotes (χ2(1) > 6) suggestive of typing error. In this example evidence for linkage did not increase when outliers were censored. Statistical quality control is an essential part of genotyping, and the effect of mistyping and map error should be considered in evaluating any genome scan.

Type
Research Article
Copyright
© University College London 1999

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