of DNA segments i/r r&o by 0.x polchain reaction WJr fingerprinting cornplcs gcnomcs’ and is a very vrluablc tool for gcncrating new probes and scqucncc taggr Li sites (STSs) in region< poorly covered with 1)NA markers (SW I\. Anand, pp. 35-40 in this issue of TlU’IECl-I 1. tlCNA gxcs. which occur in nlultiple topics dispcrscd throqhm~t the gcnomcs of many spccics, could al&.0 bc a source for deriving CQIISCIISLIS use