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Journal ArticleDOI

Evidence for transposition of dispersed repetitive DNA families in yeast

01 Apr 1979-Cell (Elsevier)-Vol. 16, Iss: 4, pp 739-751
TL;DR: In this paper, Dispersed repetitive DNA sequences from yeast (Saccharomyces cerevisiae) nuclear DNA have been isolated as molecular hybrids in lambdagt and showed marked alterations in the size of the restriction fragments containing these repetitive DNAs.
About: This article is published in Cell.The article was published on 1979-04-01. It has received 446 citations till now. The article focuses on the topics: Repeated sequence & Restriction fragment.
Citations
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Journal Article
TL;DR: A new basis for the construction of a genetic linkage map of the human genome is described, to develop, by recombinant DNA techniques, random single-copy DNA probes capable of detecting DNA sequence polymorphisms, when hybridized to restriction digests of an individual's DNA.
Abstract: We describe a new basis for the construction of a genetic linkage map of the human genome. The basic principle of the mapping scheme is to develop, by recombinant DNA techniques, random single-copy DNA probes capable of detecting DNA sequence polymorphisms, when hybridized to restriction digests of an individual's DNA. Each of these probes will define a locus. Loci can be expanded or contracted to include more or less polymorphism by further application of recombinant DNA technology. Suitably polymorphic loci can be tested for linkage relationships in human pedigrees by established methods; and loci can be arranged into linkage groups to form a true genetic map of "DNA marker loci." Pedigrees in which inherited traits are known to be segregating can then be analyzed, making possible the mapping of the gene(s) responsible for the trait with respect to the DNA marker loci, without requiring direct access to a specified gene's DNA. For inherited diseases mapped in this way, linked DNA marker loci can be used predictively for genetic counseling.

7,853 citations

Journal ArticleDOI
TL;DR: It is argued that this variation in plant cell culture itself generates genetic variability (somaclonal variation) that may be employed to enhance the exchange required in sexual hybrids for the introgression of desirable alien genes into a crop species.
Abstract: It is concluded from a review of the literature that plant cell culture itself generates genetic variability (somaclonal variation). Extensive examples are discussed of such variation in culture subclones and in regenerated plants (somaclones). A number of possible mechanisms for the origin of this phenomenon are considered. It is argued that this variation already is proving to be of significance for plant improvement. In particular the phenomenon may be employed to enhance the exchange required in sexual hybrids for the introgression of desirable alien genes into a crop species. It may also be used to generate variants of a commercial cultivar in high frequency without hybridizing to other genotypes.

3,113 citations

Journal ArticleDOI
01 May 1984-Cell
TL;DR: This pulsed field gradient gel electrophoresis fractionates intact S. cerevisiae chromosomal DNA, producing a molecular karyotype that greatly facilitates the assignment of genes to yeast chromosomes.

2,654 citations

Journal ArticleDOI
17 Apr 1980-Nature
TL;DR: Natural selection operating within genomes will inevitably result in the appearance of DNAs with no phenotypic expression whose only ‘function’ is survival within genomes.
Abstract: Natural selection operating within genomes will inevitably result in the appearance of DNAs with no phenotypic expression whose only ‘function’ is survival within genomes. Prokaryotic transposable elements and eukaryotic middle-repetitive sequences can be seen as such DNAs, and thus no phenotypic or evolutionary function need be assigned to them.

1,694 citations

Journal ArticleDOI
15 Sep 1994-Nature
TL;DR: Features of the organization of repetitive sequences in eukaryotic genomes, and their distribution in natural populations, reflect the evolutionary forces acting on selfish DNA.
Abstract: Repetitive DNA sequences form a large portion of the genomes of eukaryotes. The 'selfish DNA' hypothesis proposes that they are maintained by their ability to replicate within the genome. The behaviour of repetitive sequences can result in mutations that cause genetic diseases, and confer significant fitness losses on the organism. Features of the organization of repetitive sequences in eukaryotic genomes, and their distribution in natural populations, reflect the evolutionary forces acting on selfish DNA.

1,549 citations

References
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Journal ArticleDOI
TL;DR: This paper describes a method of transferring fragments of DNA from agarose gels to cellulose nitrate filters that can be hybridized to radioactive RNA and hybrids detected by radioautography or fluorography.

30,291 citations

Journal ArticleDOI
08 Apr 1977-Science
TL;DR: A rapid, direct method for screening single plaques of Agt recombinant phage is described, which allows at least 10(6) clones to be screened per day and simplifies physical containment of recombinants.
Abstract: A rapid, direct method for screening single plaques of Agt recombinant phage is described. The method allows at least 10(6) clones to be screened per day and simplifies physical containment of recombinants.

3,922 citations

Journal ArticleDOI
TL;DR: Electrophoresis in alkaline gels can provide accurate molecular weights for linear, single-Stranded DNAs, and should be useful in analyzing DNA for single-strand breaks, depurinations or topological differences such as ring forms.

1,387 citations

Journal ArticleDOI
TL;DR: Presented at the Cold Spring Harbor Symposium in 1951, this paper focused on regulation and development rather than transposition, and strongly reflected McClintock's newfound interest in theory.
Abstract: Presented at the Cold Spring Harbor Symposium in 1951, this paper focused on regulation and development rather than transposition, and strongly reflected McClintock's newfound interest in theory.

1,138 citations