Abstract：
:DNA sequences containing tandem dinucleotide repeats represent an abundant source of DNA polymorphism in human and other eukaryotic genomes. Here we describe a novel technique for the identification and characterization of regions of DNA containing these repetitive elements. Using primers designed to recognize tandem dinucleotide repeat sequences and limiting dilution of a target genomic library enable amplification by polymerase chain reaction (PCR) of single-target molecules containing dinucleotide repeats. Amplified material was sequenced by the PCR direct method and by the resultant sequences used to design locus-specific primers. This study identified and characterized four anonymous dinucleotide repeat sequences, three of which exhibited polymorphism. Although developed for dinucleotide repeats, the technique is universally applicable to repeat DNA elements of a size usually analyzed by PCR. The technique is comparatively rapid, eliminates library screening and its associated manipulations, and compares favorably with existing methods for the recovery of repetitive DNAs.
journal_name
Biotechniquesjournal_title
BioTechniquesauthors
Grist SA,Firgaira FA,Morley AAsubject
Has Abstractpub_date
1993-08-01 00:00:00pages
304-9issue
2eissn
0736-6205issn
1940-9818journal_volume
15pub_type
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