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Literature DB >> 7621703

A species specific satellite DNA family of Drosophila subsilvestris appearing predominantly in B chromosomes.

Abstract

This paper describes a species specific satellite DNA family (pSsP216) of Drosophila subsilvestris, a palearctic species of the D. obscura group. The pSsP216 family consists of tandemly arranged 216 bp repetitive units that are predominantly localized on B chromosomes. These chromosomes appear in variable numbers in the karyotype of this species. Some pSsP216 repeats can also be detected in the centromeric heterochromatin of the acrocentric A chromosomes. Two strains, one with and the other without B chromosomes, were investigated for sequence variability and for the location of this satellite DNA on the chromosomes. Among 16 clones of the 216 bp basic repeat unit an overall similarity of about 93% and no strain specific differences were found, indicating that the B chromosomes may have derived from the A chromosomes (probably the dots) by spontaneous amplification of the pSsP216 satellite DNA family.

Entities: Species

Mesh：

Substances：
DNA, Satellite

Year: 1995 PMID： 7621703 DOI： 10.1007/bf00355318

Source DB: PubMed Journal: Chromosoma ISSN： 0009-5915 Impact factor: 4.316

10 in total

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Authors: W Stephan; S Cho
Journal: Genetics Date: 1994-01 Impact factor: 4.562

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Authors: L Bachmann; D Sperlich
Journal: Mol Biol Evol Date: 1993-05 Impact factor: 16.240

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10 in total

11 in total

Review 1. B-chromosome evolution.

Authors: J P Camacho; T F Sharbel; L W Beukeboom
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4. The giant B chromosome of the cyprinid fish Alburnus alburnus harbours a retrotransposon-derived repetitive DNA sequence.

Authors: C G Ziegler; D K Lamatsch; C Steinlein; W Engel; M Schartl; M Schmid
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