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Literature DB >> 837803

DNA content in the genus Xenopus.

Abstract

Nuclear DNA amounts were determined by cytofluorometry for twelve species and subspecies of the genus Xenopus. Absolute values, in pg per nucleus, were obtained by direct comparison with human lymphocyte nuclei. The lowest DNA amount (3.55 pg) was found in X. tropicalis, which possess only 20 chromosomes, and the highest (16.25 pg), in the hexaploid X. ruwenzoriensis, with 108 chromosomes. The two recently discovered tetraploid species, X. sp.n. and X. vestitus have, respectively 12,57 and 12.83 pg of DNA. Among the species and subspecies with 36 chromosomes, the DNA content ranges from 6.35 to 8.45 pg.

Entities: Species

Mesh：

Substances：
DNA

Year: 1977 PMID： 837803 DOI： 10.1007/BF00292781

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

9 in total

1. Repeated sequences in DNA. Hundreds of thousands of copies of DNA sequences have been incorporated into the genomes of higher organisms.

Authors: R J Britten; D E Kohne
Journal: Science Date: 1968-08-09 Impact factor: 47.728

2. Karyotype analysis of Xenopus tropicalis Gray, Pipidae.

Authors: J Tymowska
Journal: Cytogenet Cell Genet Date: 1973

3. Chromosome complements of the genus Xenopus.

Authors: J Tymowska; M Fischberg
Journal: Chromosoma Date: 1973 Impact factor: 4.316

4. Karyotype analysis of Xenopus muelleri (Peters) and Xenopus laevis (Daudin), Pipidae.

Authors: J Tymowska; H R Kobel
Journal: Cytogenetics Date: 1972

5. Genome size in mammals.

Authors: K Bachmann
Journal: Chromosoma Date: 1972 Impact factor: 4.316

6. A centrifugation technique for cytochemical preparations.

Authors: U Leemann; S Weiss; E Schmutz
Journal: J Histochem Cytochem Date: 1971-12 Impact factor: 2.479

7. The comparative DNA content of 19 species of placental mammals, reptiles and birds.

Authors: N B Atkin; G Mattinson; W Beçak; S Ohno
Journal: Chromosoma Date: 1965 Impact factor: 4.316

8. The mitotic chromosomes in Xenopus laevis (Daudin): normal, sex reversed and female WW.

Authors: K Mikamo; E Witschi
Journal: Cytogenetics Date: 1966

9. Deoxyribonucleic acid in amphibian eggs.

Authors: I B Dawid
Journal: J Mol Biol Date: 1965-07 Impact factor: 5.469

9 in total

36 in total

1. Sequence organization and developmentally regulated transcription of a family of repetitive DNA sequences of Xenopus laevis.

Authors: C D Riggs; J H Taylor
Journal: Nucleic Acids Res Date: 1987-11-25 Impact factor: 16.971

2. Presence of Vi-transposon-like elements in the proopiomelanocortin gene A of Xenopus laevis does not affect gene activity.

Authors: P M Deen; E W Roubos; G J Martens
Journal: Mol Gen Genet Date: 1991-12

DNA content in the genus Xenopus.

1. Repeated sequences in DNA. Hundreds of thousands of copies of DNA sequences have been incorporated into the genomes of higher organisms.

2. Karyotype analysis of Xenopus tropicalis Gray, Pipidae.

3. Chromosome complements of the genus Xenopus.

4. Karyotype analysis of Xenopus muelleri (Peters) and Xenopus laevis (Daudin), Pipidae.

5. Genome size in mammals.

6. A centrifugation technique for cytochemical preparations.

7. The comparative DNA content of 19 species of placental mammals, reptiles and birds.

8. The mitotic chromosomes in Xenopus laevis (Daudin): normal, sex reversed and female WW.

9. Deoxyribonucleic acid in amphibian eggs.

1. Sequence organization and developmentally regulated transcription of a family of repetitive DNA sequences of Xenopus laevis.

2. Presence of Vi-transposon-like elements in the proopiomelanocortin gene A of Xenopus laevis does not affect gene activity.

3. Exon-intron organization of Xenopus MHC class II beta chain genes.

4. Histone gene number and organisation in Xenopus: Xenopus borealis has a homogeneous major cluster.

5. Vitellogenin genes A1 and B1 are linked in the Xenopus laevis genome.

6. The organization of the tadpole and adult alpha globin genes of Xenopus laevis.

7. Molecular cloning and sequencing of mRNAs coding for minor adult globin polypeptides of Xenopus laevis.

8. Cytophotometric evidence of variation in genome size of desmognathine salamanders.

9. Quantitative aspects of the cytochemical Feulgen-DNA procedure studied on model systems and cell nuclei.

10. Chromosome banding in Amphibia. XVI. High-resolution replication banding patterns in Xenopus laevis.