Toward a physical map of the genome of the nematode Caenorhabditis elegans

  1. Alan Coulson,
  2. John Sulston,
  3. Sydney Brenner, and
  4. Jonathan Karn
  1. Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge, CB2 2QH, England

Abstract

A technique for digital characterization and comparison of DNA fragments, using restriction enzymes, is described. The technique is being applied to fragments from the nematode Caenorhabditis elegans (i) to facilitate cross-indexing of clones emanating from different laboratories and (ii) to construct a physical map of the genome. Eight hundred sixty clusters of clones, from 35 to 350 kilobases long and totaling about 60% of the genome, have been characterized.

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