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Science 26 August 1983:
Vol. 221. no. 4613, pp. 862 - 865
DOI: 10.1126/science.6879182
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Articles

Science, Vol 221, Issue 4613, 862-865
Copyright © 1983 by American Association for the Advancement of Science

articles

An inverted repeat borders a fivefold amplification in satellite DNA

V Bonnewell, RF Fowler, and DM Skinner

One variant of a complex satellite DNA of the Bermuda land crab is significantly longer than the average repeat unit of the satellite. The extra DNA in the variant is accounted for by a fivefold tandem amplification of a 0.142-kilobase sequence. The amplified sequence is bounded by a tetranucleotide inverted repeat; the upstream arm of the inverted repeat is missing from two other variants of the satellite. The latter variants contain only one copy of a sequence that is closely related to the amplified sequence. By contrast, in several satellite DNA's of other organisms, extra DNA is inserted.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)