Abstract:
:We have used radiation hybrid (RH) mapping and pulsed-field gel electrophoresis (PFGE) to determine the order and positions of 28 DNA markers from the distal region of the long arm of human chromosome 21. The maps generated by these two methods are in good agreement. This study, combined with that of D. R. Cox et al. (1990, Science 250:245-250), results in an RH map that covers the long arm of chromosome 21 (21q). We have used a subtelomeric probe to show that our map includes the telomere and have identified single-copy genes and markers within 200 kbp of the telomere. Comparison of the physical and RH maps with genetic linkage maps shows "hot spots" of meiotic recombination in the distal region, one of which is close to the telomere, in agreement with previous cytogenetic observations of increased recombination frequency near telomeres.
journal_name
Genomicsjournal_title
Genomicsauthors
Burmeister M,Kim S,Price ER,de Lange T,Tantravahi U,Myers RM,Cox DRdoi
10.1016/0888-7543(91)90216-2subject
Has Abstractpub_date
1991-01-01 00:00:00pages
19-30issue
1eissn
0888-7543issn
1089-8646journal_volume
9pub_type
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