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Vol. 29, No. 1, 1979
Issue release date: 1979
Hum Hered 1979;29:37–41
Original Paper

Variability in Sib Pair Genetic Identity

Suarez B.K. · Reich T. · Fishman P.M.
Washington University School of Medicine, Department of Psychiatry, St. Louis, Mo.


Using a realistic model of meiotic crossing over the variability in full sib genetic identity is estimated by simulating 200 independent pairs of sibs. The standard deviation of the percentage of the autosomal genome identical by descent (IBD) was found to be about 0.056. Simulations of sibships larger than size two revealed that the average within sibship standard deviation is between 0.054 and 0.056, thus indicating that sib pair variability is insensitive to the nonindependence structure present when considering all possible sib pairs contained in a large sibship.

 goto top of outline Author Contacts

Dr. Brian K. Suarez, Washington University School of Medicine, Department of Psychiatry, 4940 Audubon Avenue, St. Louis, Mo 63110 (USA)

 goto top of outline Article Information

Published online: August 29, 2008
Number of Print Pages : 5

 goto top of outline Publication Details

Human Heredity (International Journal of Human and Medical Genetics)

Vol. 29, No. 1, Year 1979 (Cover Date: 1979)

Journal Editor: Devoto M. (Philadelphia, Pa.)
ISSN: 0001–5652 (Print), eISSN: 1423–0062 (Online)

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