Chromosome-wide distribution of haplotype blocks and the role of recombination hot spots

M. S. Phillips, R. Lawrence, R. Sachidanandam, A. P. Morris, D. J. Balding, M. A. Donaldson, J. F. Studebaker, W. M. Ankener, S. V. Alfisi, E. S. Kuo, A. L. Camisa, V. Pazorov, K. E. Scott, B. J. Carey, J. Faith, G. Katari, H. A. Bhatti, J. M. Cyr, V. Derohannessian, C. ElosuaA. M. Forman, N. M. Grecco, C. R. Hock, J. M. Kuebler, J. A. Lathrop, M. A. Mockler, E. P. Nachtman, S. L. Restine, S. A. Varde, M. J. Hozza, C. A. Gelfand, J. Broxholme, G. R. Abecasis, M. T. Boyce-Jacino, L. R. Cardon

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244 Scopus citations

Abstract

Recent studies of human populations suggest that the genome consists of chromosome segments that are ancestrally conserved ('haplotype blocks'; refs. 1-3) and have discrete boundaries defined by recombination hot spots4,5. Using publicly available genetic markers6, we have constructed a first-generation haplotype map of chromosome 19. As expected for this marker density7, approximately one-third of the chromosome is encompassed within haplotype blocks. Evolutionary modeling of the data indicates that recombination hot spots are not required to explain most of the observed blocks, providing that marker ascertainment and the observed marker spacing are considered. In contrast, several long blocks are inconsistent with our evolutionary models, and different mechanisms could explain their origins.

Original languageEnglish
Pages (from-to)382-387
Number of pages6
JournalNature Genetics
Volume33
Issue number3
DOIs
StatePublished - 1 Mar 2003
Externally publishedYes

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