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A Chromosome-based method to infer IBD scores for missing and ambiguous markers

✍ Scribed by Dr. Chi Gu; Brian K. Suarez; Theodore Reich; Alexandre A. Todorov


Book ID
102221624
Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
316 KB
Volume
12
Category
Article
ISSN
0741-0395

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

We propose a probability model to impute missing identical‐by‐descent (IBD) vectors for linkage analysis, when adjacent marker loci are typed and interference is estimable. A chromosome‐based IBD distribution, conditioned on available marker data, is computed using a fast algorithm to estimate the joint probability of genes IBD at several equally spaced linked loci. Weighted IBD vectors are then used in various test statistics for linkage analysis. As an example, we analyzed the 18 affected sib pairs in the GAW9 Problem 1 data set using Risch's lod‐score test. Β© 1995 Wiley‐Liss, Inc.


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