Abstract
Restriction enzyme mapping of snap-back DNA has been used to show that the ribosomal DNA (rRNA genes and spacers) from Dictyostelium discoideum exists as 88 kb (kb=1,000 base pairs) linear palindromic dimers. Analysis of the mobility of total cell DNA in 0.15% agarose gels indicates that the majority of the rDNA is not covalently attached to chromosomal DNA.
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Cockburn, A.F., Taylor, W.C. & Firtel, R.A. Dictyostelium rDNA consists of non-chromosomal palindromic dimers containing 5S and 36S coding regions. Chromosoma 70, 19–29 (1978). https://doi.org/10.1007/BF00292212
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DOI: https://doi.org/10.1007/BF00292212