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Chromosome Probes Sensitive chromosome probes recently discovered by a University of Toronto geneticist will make it easier to detect certain types of genetic and prenatal diseases, as well as being used to determine paternity and provide forensic evidence in criminal cases. Probes are short pieces of DNA which bind to, and actually pinpoint, particular sites on a chromosome. Because these new probes are actually repeated hundreds or thousands of time at a particular site, they …

…or murder cases. "We haven't yet done the analysis which confirms that our probes are DNA fingerprints, but once we do, we will make them available for development into tests." As research progresses in all these areas, Willard hopes to collaborate with other departments at the U of T to conduct clinical trials. His work is funded by the March of Dimes, the Hospital for Sick Children Foundation and the Medical Research Council. ------------------------------------------------------------------------ **Bibliography**