Comparative analysis of DNA sequence organization in the vertebrate genome

Ginatulin, A. A.; Ginatulina, L. K.; Kupriyanova, N. S.; Timofeeva, M. Ya.; Vorontsov, N. N.

doi:10.1007/bf00121822

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…It is interesting that many of the repetitive sequences of the chicken genome are conserved as they were found in the genome of such a distant species as the ostrich, although their amount is considerably lower (Eden et al 1978). On the whole, in chicken DNA unique sequences are interspersed with long repetitive sequences and the genome organization is closer to that of Drosophila and some other insects than to the Xenopus-type genome organization of most vertebrates (Shields and Straus 1978;Epplen et al 1978;Ginatulin et al 1979).…”

Section: B Chromosome Banding Patterns and Dna In Reptiles And Birdsmentioning

confidence: 94%

“…Now it has become evident that no such clear-cut universalization exists. For example, genome organization in many birds is apparently quite different (Arthur and Straus 1978;Epplen et al 1978;Ginatulin et al 1979), for more on which see below. Moreover, recent data on the repetitive sequence arrangement in amphibians does not quite agree with the results of the pioneer works.…”

Section: B Genome Organization In Amphibiansmentioning

confidence: 96%

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Structural characteristics of genome organization in amphibians: Differential staining of chromosomes and DNA structure

Birstein

1982

J Mol Evol

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Section: B Chromosome Banding Patterns and Dna In Reptiles And Birdsmentioning

confidence: 94%

Section: B Genome Organization In Amphibiansmentioning

confidence: 96%

Structural characteristics of genome organization in amphibians: Differential staining of chromosomes and DNA structure

Birstein

1982

J Mol Evol

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“…In their genomes in addition to the two types mentioned, other types were found. In the genomes of the fungus Achlya (Hudspeth et al, 1977) and the albatross Diomedea epomophora (Ginatulin & Ginatulina, 1979;Ginatulin et al, 1980) a considerable part of the genome (more than 70-80%) consists of single-cop3' sequences more than 10 kb long, not interspersed with repetitions. Thus, one must acknowledge that uniformity ofgenome arrangement as postulated in the first papers Galau et aL, 1976) is not a rule in eukaryotes.…”

Section: Introductionmentioning

confidence: 99%

Genome analysis of ground squirrels of the genus Citellus (Rodentia, Sciuridae) II. DNA sequence organization

1983

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The organization of the DNA scquences in five species of Citeth~s (C. pygmaeus, C. J'ulvus, C. mq/or, C. parryi and C. undutatus) was determined from the reassociation kinetics of DNA fragments of various lengths and the size distribution of SI-nuclease-resistant duplexes of repetitive DNA. Only 15% of the genome of all the species studied consists of short unique and repeated sequences interspersed with a period less than 2 3 kb, whereas the major part of the genome is occupied by much more extensive sequences of two types, moderately long (3-15 kb) and very long (much more than 15 kb). On the basis of the number of moderately long single-copy sequences the species under study are divided into two groups, coinciding with their division into short-tailed and long-tailed ground squirrels: the short-tailed (C. pygmaeus, C. major and C. fulvus) possess far more such sequences (17 24%) than do the long-tailed ones (C. parrvi and C. undulatus) (1-7%). The same division is observed in the amount of very long single-copy sequences. The repeated DNA sequences of Citellus vary widely in size. i.e. from 70 up to some thousands of nucleotide pairs, sequences of more than 1200 nucleotide pairs being most common. In addition, part of the repetitions contain between 70 and 150 base pairs. About one-third of C. paro, i repeats (10% of the genome) are characterized by such very short sequences whereas their amount is much less in the other Citetlus species (1 4% of the genome).

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Genome analysis of ground squirrels of the genus Citellus (Rodentia, Sciuridae) I. DNA reassociation kinetics and genome size of eight species

et al. 1982

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Kinetic of reassociation of short DNA fragments were measured in eight ground squirrel species: Citellus undulatus, C. parryL C. relictus, C. dauricus, C. citellus, C. pygmaeus, C. fulvus and C. major. It was shown that 30-50% of their genome were represented by repeated sequences forming three kinetic fractions, i,e., very fast(Cot< 10 3), fast(Cot 10 -3 -3 × I0 -l) and intermediate (Cot 6 × 10 -1 -6 × 101). Based on parameters of DNA reassociation kinetics genome sizes of Citellus were estimated to range from 2.7 pg (C. dauricus) to 3.9 pg (C. pygmaeus and C.fulvus). Variation in genome sizes involves both the repeated and the non-repeated sequence components to approximately equal extents in all the species except C. dauricus. The linear quantitative relation between C-banding heterochromatin and both very fast and fast reassociated DNA fractions was established, but no connection with the intermediate fraction was found. No distinct relation was revealed between parameters of DNA reassociation kinetics and taxonomic status of species within genus or with the chromosome number of the karyotype.

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Comparative analysis of DNA sequence organization in the vertebrate genome

Cited by 5 publications

References 15 publications

Structural characteristics of genome organization in amphibians: Differential staining of chromosomes and DNA structure

Structural characteristics of genome organization in amphibians: Differential staining of chromosomes and DNA structure

Genome analysis of ground squirrels of the genus Citellus (Rodentia, Sciuridae) II. DNA sequence organization

Genome analysis of ground squirrels of the genus Citellus (Rodentia, Sciuridae) I. DNA reassociation kinetics and genome size of eight species

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