A new pericentromeric repeated DNA sequence in Microtus thomasi

2009 ◽  
Vol 124 (1) ◽  
pp. 27-36 ◽  
Author(s):  
M.J. Acosta ◽  
J.A. Marchal ◽  
G.P. Mitsainas ◽  
M.T. Rovatsos ◽  
C.H. Fernández-Espartero ◽  
...  
Keyword(s):  
Dna Sequence ◽  
Repeated Dna ◽  
Repeated Dna Sequence

A highly repeated DNA sequence in Arabidopsis thaliana

1986 ◽  
Vol 204 (3) ◽  
pp. 417-423 ◽  
Author(s):  
Jose M. Martinez-Zapater ◽  
Mark A. Estelle ◽  
Chris R. Somerville
Keyword(s):  
Arabidopsis Thaliana ◽  
Dna Sequence ◽  
Repeated Dna ◽  
Highly Repeated Dna ◽  
Repeated Dna Sequence

scholarly journals Repeated DNA sequence involved in mutations affecting transport of sucrose into Streptococcus mutans V403 via the phosphoenolpyruvate phosphotransferase system.

1991 ◽  
Vol 59 (4) ◽  
pp. 1535-1543 ◽  
Author(s):  
F L Macrina ◽  
K R Jones ◽  
C A Alpert ◽  
B M Chassy ◽  
S M Michalek
Keyword(s):  
Streptococcus Mutans ◽  
Dna Sequence ◽  
Repeated Dna ◽  
Phosphotransferase System ◽  
Repeated Dna Sequence

scholarly journals Chromosomal localization of a tandemly repeated DNA sequence in Trifolium repens L.

Cell Research ◽  
1996 ◽  
Vol 6 (1) ◽  
pp. 39-46 ◽  
Author(s):  
JM Zhu ◽  
NW Ellison ◽  
RW Rowland
Keyword(s):  
Dna Sequence ◽  
Trifolium Repens ◽  
Chromosomal Localization ◽  
Repeated Dna ◽  
Repeated Dna Sequence ◽  
Trifolium Repens L ◽  
Tandemly Repeated Dna Sequence ◽  
Tandemly Repeated Dna

The identification of a repeated DNA sequence involved in the karyotype polymorphism of the human Y chromosome

1978 ◽  
Vol 21 (1-2) ◽  
pp. 19-32 ◽  
Author(s):  
R.D.G McKay ◽  
M. Bobrow ◽  
H.J. Cooke
Keyword(s):  
Y Chromosome ◽  
Dna Sequence ◽  
Repeated Dna ◽  
Repeated Dna Sequence ◽  
Karyotype Polymorphism ◽  
Human Y Chromosome

scholarly journals Organization ofPlasmodium falciparum genome: 1. Evidence for a highly repeated DNA sequence

1985 ◽  
Vol 13 (6) ◽  
pp. 1965-1975 ◽  
Author(s):  
Ramareddy V. Guntaka ◽  
Siddarame Gowda ◽  
Arepalli S. Rao ◽  
Theodore J. Green
Keyword(s):  
Dna Sequence ◽  
Falciparum Genome ◽  
Repeated Dna ◽  
Highly Repeated Dna ◽  
Ofplasmodium Falciparum ◽  
Repeated Dna Sequence

Characterization of a major tandemly repeated DNA sequence (RBMII) prevalent among many species of waterfowl (Anatidae)

Genome ◽  
1992 ◽  
Vol 35 (6) ◽  
pp. 1037-1044 ◽  
Author(s):  
Cort S. Madsen ◽  
Kevin P. McHugh ◽  
Siwo R. de Kloet
Keyword(s):  
Dna Sequence ◽  
Sequence Variation ◽  
Sequence Divergence ◽  
Repeated Dna ◽  
Sequence Comparisons ◽  
Nonrandom Distribution ◽  
Repeated Dna Sequence ◽  
Tandemly Repeated Dna Sequence ◽  
Tandemly Repeated Dna

We have investigated the evolution of a 190 base pair tandemly repeated DNA sequence (RBMII) in 27 different species of waterfowl. In this paper we show that the RBMII sequence is present in many species belonging to 7 of the 11 Anatid tribes. Inter- and intra-tribal differences in repeat presence indicate that, although the RBMII sequence has been maintained among widely divergent species, it is rapidly evolving. Restriction enzyme analyses suggest very different hierarchical repeat organizations among different species. DNA sequence comparisons of 32 cloned monomer units from five different species revealed what appears to be a nonrandom distribution of sequence divergence, as well as large differences (up to 25-fold) in intraspecific sequence variation between relatively closely related species.Key words: repeated DNA, Anatidae, sequence variation.

A moderately repeated DNA sequence of wheat and rye genomes

1992 ◽  
Vol 18 (3) ◽  
pp. 603-605 ◽  
Author(s):  
Marta Dobrzańska ◽  
Blanka Szurmak
Keyword(s):  
Dna Sequence ◽  
Repeated Dna ◽  
Repeated Dna Sequence

Organization and distribution of a Sau3A tandem repeated DNA sequence in Picea (Pinaceae) species

Genome ◽  
1998 ◽  
Vol 41 (4) ◽  
pp. 560-565 ◽  
Author(s):  
Garth R Brown ◽  
Craig H Newton ◽  
John E Carlson
Keyword(s):  
In Situ Hybridization ◽  
Dna Sequence ◽  
Picea Glauca ◽  
Tandem Repeats ◽  
Picea Sitchensis ◽  
Repeated Dna ◽  
Metaphase Chromosomes ◽  
Genes Encoding ◽  
Repeated Dna Sequence

Repeated DNA families contribute to the large genomes of coniferous trees but are poorly characterized. We report the analysis of a 142 bp tandem repeated DNA sequence identified by the restriction enzyme Sau3A and found in approximately 20 000 copies in Picea glauca. Southern hybridization indicated that the repeated DNA family is specific to the genus, was amplified early in its evolution, and has undergone little structural alteration over evolutionary time. Fluorescence in situ hybridization localized arrays of the Sau3A repeating element to the centromeric regions of different subsets of the metaphase chromosomes of P. glauca and the closely related Picea sitchensis, suggesting that mechanisms leading to the intragenomic movement of arrays may be more active than those leading to mutation of the repeating elements themselves. Unambiguous identification of P. glauca and P. sitchensis chromosomes was made possible by co-localizing the Sau3A tandem repeats and the genes encoding the 5S and 18S-5.8S-26S ribosomal RNAs.Key words: Picea, repeated DNA, in situ hybridization, centromere.

Genomic relationships between Dasypyrum villosum (L.) Candargy and D. hordeaceum (Cosson et Durieu) Candargy

Genome ◽  
1996 ◽  
Vol 39 (1) ◽  
pp. 83-92 ◽  
Author(s):  
A. Blanco ◽  
R. Simeone ◽  
P. Resta ◽  
C. De Pace ◽  
V. Delre ◽  
...  
Keyword(s):  
Dna Sequence ◽  
Dna Sequences ◽  
Phylogenetic Relationships ◽  
Single Copy ◽  
Dasypyrum Villosum ◽  
Repeated Dna ◽  
Esterase Isozyme ◽  
Dot Blot ◽  
Genomic Relationships ◽  
Repeated Dna Sequence

The origin and genomic constitution of the tetraploid perennial species Dasypyrum hordeaceum (2n = 4x = 28) and its phylogenetic relationships with the annual diploid Dasypyrum villosum (2n = 2x = 14) have been investigated by comparing the two genomes using different methods. There is no apparent homology between the conventional or Giemsa C-banded karyotypes of the two Dasypyrum species, nor can the karyotype of D. hordeaceum be split up into two similar sets. Polymorphism within several chromosome pairs was observed in both karyotypes. Cytophotometric determinations of the Feulgen–DNA absorptions showed that the genome size of D. hordeaceum was twice as large as that of D. villosum. Both the cross D. villosum × D. hordeaceum (crossability rate 12.1%) and the reciprocal cross (crossability rate 50.7%) produced plump seeds. Only those from the former cross germinated, producing sterile plants with a phenotype that was intermediate between those of the parents. In these hybrids (2n = 21), an average of 13.77 chromosomes per cell paired at meiotic metaphase I. Trivalents were only rarely observed. Through dot-blot hybridizations, a highly repeated DNA sequence of D. villosum was found not to be represented in the genome of D. hordeaceum. By contrast, very similar restriction patterns were observed when a low-repeated DNA sequence or different single-copy sequences of D. villosum or two sequences in the plastidial DNA of rice were hybridized to Southern blots of the genomic DNAs of the two Dasypyrum species digested with different restriction endonucleases. By analyzing glutamic-oxaloacetic-transaminase, superoxide dismutase, alcohol dehydrogenase, and esterase isozyme systems, it was shown that both Dasypyrum species shared the same phenotypes, which differed from those found in hexaploid wheat. In situ hybridizations using DNA sequences encoding gliadins showed that these genes were located close to the centromere of three pairs of D. villosum chromosomes and that they had the same locations in six pairs of D. hordeaceum chromosomes. We conclude that the autoploid origin of D. hordeaceum from D. villosum, which cannot be defended on the basis of chromosomal traits, is suggested by the other findings obtained by comparing the two genomes. Key words : Dasypyrum hordeaceum, Dasypyrum villosum, phylogenetic relationships.

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