Click here to close
Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly.
We suggest using a current version of Chrome,
FireFox, or Safari.
Genome structure and divergence of nucleotide sequences in echinodermata.
Brykov VA
,
Volfson VG
,
Vorob'ev VI
.
Abstract
The arrangement of repetitive and single-copy DNA sequences has been studied in DNA of some species of Echinodermata--sea urchin, starfishes and sea-cucumber. Comparison of the reassociation kinetics of short and long DNA fragments indicates that the pattern of DNA sequence organization of all these species is similar to the so-called "Xenopus pattern" characteristic of the genomes of most animals and plants. However, substantional variations have been found in the amount of repetitive nucleotide sequences in DNA of different species and in the length of DNA regions containing adjacent single-copy and repetitive sequences. Measurements of the size of S1-nuclease resistant reassociated repetitive DNA sequences show a variability of ratios between long and short repetitive DNA sequences of different species.--The degree of divergence of short and long repetitive DNA sequences and single-copy DNA was studied by molecular hybridization of the sea urchin Strongylocentrotus intermedius 3H-DNA with the DNA of other species and by determination of the thermostability of the hybridized molecules so obtained. All three fractions of S. intermedius DNA contain sequences homologous to DNA of the other echinoderm species studied. The results obtained suggest that short repetitive DNA sequences are those which have been most highly conserved throughout the evolution of Echinodermata. A new hypothesis is proposed to explain the nature of the evolutionary changes in DNA sequence interspersion patterns.
Angerer,
DNA sequence organization in the mollusc Aplysia californica.
1975, Pubmed,
Xenbase
Angerer,
DNA sequence organization in the mollusc Aplysia californica.
1975,
Pubmed
,
Xenbase
Angerer,
Single copy DNA and structural gene sequence relationships among four sea urchin species.
1976,
Pubmed
Baldari,
Length and interspersion of repetitive and non repetitive DNA sequences in four amphibian species with different genome sizes.
1977,
Pubmed
,
Xenbase
Baldari,
DNA reassociation kinetics in relation to genome size in four amphibian species.
1976,
Pubmed
,
Xenbase
Beckmann,
Relative stabilities of RNA/DNA hybrids: effect of RNA chain length in competitive hybrization.
1974,
Pubmed
Bonner,
Reduction in the rate of DNA reassociation by sequence divergence.
1973,
Pubmed
Bonner,
Functional organization of the mammalian genome.
1974,
Pubmed
Britten,
Gene regulation for higher cells: a theory.
1969,
Pubmed
Britten,
Evolutionary divergence and length of repetitive sequences in sea urchin DNA.
1976,
Pubmed
Britten,
Analysis of repeating DNA sequences by reassociation.
1974,
Pubmed
Chamberlin,
Sequence organization in Xenopus DNA studied by the electron microscope.
1975,
Pubmed
,
Xenbase
Crain,
Absence of short period interspersion of repetitive and non-repetitive sequences in the DNA of Drosophila melanogaster.
1976,
Pubmed
Crain,
Contrasting patterns of DNA sequence arrangement in Apis mellifera (honeybee) and Musca domestica (housefly).
1976,
Pubmed
Davidson,
General interspersion of repetitive with non-repetitive sequence elements in the DNA of Xenopus.
1973,
Pubmed
,
Xenbase
Davidson,
Sequence organization in animal DNA and a speculation on hnRNA as a coordinate regulatory transcript.
1977,
Pubmed
,
Xenbase
Davidson,
Comparative aspects of DNA organization in Metazoa.
1975,
Pubmed
,
Xenbase
Davidson,
Arrangement and characterization of repetitive sequence elements in animal DNAs.
1974,
Pubmed
,
Xenbase
Eden,
Exploration of long and short repetitive sequence relationships in the sea urchin genome.
1977,
Pubmed
Farguhar,
Evolutionary stability of the histone genes of sea urchins.
1973,
Pubmed
,
Xenbase
Goldberg,
DNA sequence organization in the genomes of five marine invertebrates.
1975,
Pubmed
Graham,
Homologies of repetitive DNA sequences among Crustacea.
1973,
Pubmed
HYER,
A MOLECULAR APPROACH IN THE SYSTEMATICS OF HIGHER ORGANISMS. DNA INTERACTIONS PROVIDE A BASIS FOR DETECTING COMMON POLYNUCLEOTIDE SEQUENCES AMONG DIVERSE ORGANISMS.
1964,
Pubmed
Kohne,
Evolution of higher-organism DNA.
1970,
Pubmed
Manning,
Interspersion of repetitive and nonrepetitive DNA sequences in the Drosophila melanogaster genome.
1975,
Pubmed
,
Xenbase
Mizuno,
Interspecific "common" repetitive DNA sequences in salamanders of the genus Plethodon.
1976,
Pubmed
Noll,
Characterization of macromolecules by constant velocity sedimentation.
1967,
Pubmed
Smith,
Nucleotide sequence organisation in the rye genome.
1977,
Pubmed
Sutton,
Related satellite DNA's in the genus Mus.
1972,
Pubmed
Sutton,
Chromatin packing, repeated DNA sequences and gene control.
1972,
Pubmed
Tartof,
Redundant genes.
1975,
Pubmed
Vaughn,
Conservation of repeated DNA base sequences in Crustacea: a molecular approach to decapod phylogeny.
1976,
Pubmed
Vorob'ev,
Cytoplasmic transfer of RNA complementary to repetitious DNA sequences during early sea urchin embryogenesis.
1973,
Pubmed
Vorob'ev,
Distribution of repetitive and non-repetitive nucleotide sequences in the DNA of sea urchin.
1974,
Pubmed
Weinberg,
Genes coding for polysomal 9S RNA of sea urchins: conservation and divergence.
1972,
Pubmed
Wells,
Non Xenopus-like DNA sequence organization in the Chironomus tentans genome.
1976,
Pubmed
,
Xenbase
Wobus,
Molecular characterization of an insect genome: Chironomus thummi.
1975,
Pubmed
