Transposable elements in natural populations of Drosophila melanogaster
نویسندگان
چکیده
منابع مشابه
Transposable elements in natural populations of Drosophila melanogaster.
Transposable elements (TEs) are families of small DNA sequences found in the genomes of virtually all organisms. The sequences typically encode essential components for the replicative transposition sequences of that TE family. Thus, TEs are simply genomic parasites that inflict detrimental mutations on the fitness of their hosts. Several models have been proposed for the containment of TE copy...
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Forty-six strains derived from American and French natural populations of Drosophila melanogaster were tested for the presence and activity of hobo elements by using Southern blotting and a gonadal dysgenesis assay. The oldest available strains exhibited weak detectable hybridization to the hobo-element probe and revealed neither hobo-activity potential nor hobo-repression potential. In contras...
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Transposable elements (TEs) are the primary contributors to the genome bulk in many organisms and are major players in genome evolution. A clear and thorough understanding of the population dynamics of TEs is therefore essential for full comprehension of the eukaryotic genome evolution and function. Although TEs in Drosophila melanogaster have received much attention, population dynamics of mos...
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The invasion of P elements in natural populations of Drosophila melanogaster was modeled by establishing laboratory populations with 1%, 5% and 10% P genomes and monitoring the populations for 20 generations. In one experiment, the ability of flies to either induce or suppress gonadal sterility in different generations was correlated with the amount of P element DNA. In a second experiment, the...
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We report here a superfamily of "cut and paste" DNA transposons called Transib. These transposons populate the Drosophila melanogaster and Anopheles gambiae genomes, use a transposase that is not similar to any known proteins, and are characterized by 5-bp target site duplications. We found that the fly genome, which was thought to be colonized by the P element <100 years ago, harbors approxima...
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ژورنال
عنوان ژورنال: Philosophical Transactions of the Royal Society B: Biological Sciences
سال: 2010
ISSN: 0962-8436,1471-2970
DOI: 10.1098/rstb.2009.0318