A physical map of the chicken genome

John W. Wallis, Jan Aerts, Martien A.M. Groenen, Richard P.M.A. Crooljmans, Dan Layman, Tina A. Graves, Debra E. Scheer, Colin Kremitzki, Mary J. Fedele, Nancy K. Mudd, Marco Cardenas, Jamey Higginbotham, Jason Carter, Rebecca McGrane, Tony Gaige, Kelly Mead, Jason Walker, Derek Albracht, Jonathan Davito, Shlaw Pyng YangShin Leong, Asif Chinwalla, Mandeep Sekhon, Kristine Wylie, Jerry Dodgson, Michael N. Romanov, Hans Cheng, Pleter J. De Jong, Kazutoyo Osoegawa, Mikhail Nefedov, Hongbin Zhang, John D. McPherson, Martin Krzywinski, Jacquie Scheln, Le Deana Hillier, Elaine R. Mardis, Richard K. Wilson, Wesley C. Warren

Research output: Contribution to journalArticlepeer-review

164 Scopus citations


Strategies for assembling large, complex genomes have evolved to include a combination of whole-genome shotgun sequencing and hierarchal map-assisted sequencing. Whole-genome maps of all types can aid genome assemblies, generally starting with low-resolution cytogenetic maps and ending with the highest resolution of sequence. Fingerprint done maps are based upon complete restriction enzyme digests of clones representative of the target genome, and ultimately comprise a near-contiguous path of clones across the genome. Such clone-based maps are used to validate sequence assembly order, supply long-range linking information for assembled sequences, anchor sequences to the genetic map and provide templates for closing gaps. Fingerprint maps are also a critical resource for subsequent functional genomic studies, because they provide a redundant and ordered sampling of the genome with clones. In an accompanying paper we describe the draft genome sequence of the chicken, Gallus gallus, the first species sequenced that is both a model organism and a global food source. Here we present a clone-based physical map of the chicken genome at 20-fold coverage, containing 260 contigs of overlapping clones. This map represents approximately 91% of the chicken genome and enables identification of chicken clones aligned to positions in other sequenced genomes.

Original languageEnglish
Pages (from-to)761-764
Number of pages4
Issue number7018
StatePublished - Dec 9 2004


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