A library prepared from flow-sorted chromosomes was used to isolate single-copy sequences from chromosome seven. One such sequence 7C22 has been shown to be polymorphic for an EcoRI restriction site and to be informative for the study of CF in approximately 35% of matings. The segregation of the 7C22 alleles was followed through nineteen informative families with more than one child affected by cystic fibrosis. We report that the locus for 7C22 is linked to the locus for cystic fibrosis at a recombination fraction of 0.045. This marker will prove useful in improving the accuracy and informativeness of prenatal diagnosis and in constructing a fine genetic map around the cystic fibrosis gene.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC339634PMC
http://dx.doi.org/10.1093/nar/14.5.1951DOI Listing

Publication Analysis

Top Keywords

cystic fibrosis
16
isolation anonymous
4
anonymous informative
4
informative dna
4
dna sequence
4
sequence chromosome
4
chromosome closely
4
closely linked
4
cystic
4
linked cystic
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!