Transposable elements and polyploid evolution in animals
نویسندگان
چکیده
منابع مشابه
The history and disposition of transposable elements in polyploid Gossypium.
Transposable elements (TEs) are a major component of plant genomes. It is of particular interest to explore the potential activation of TE proliferation, especially in hybrids and polyploids, which often are associated with rapid genomic and epigenetic restructuring. Here we explore the consequences of genomic merger and doubling on copia and gypsy-like Gorge3 long terminal repeat (LTR) retrotr...
متن کاملTransposable elements as sources of variation in animals and plants.
A tremendous wealth of data is accumulating on the variety and distribution of transposable elements (TEs) in natural populations. There is little doubt that TEs provide new genetic variation on a scale, and with a degree of sophistication, previously unimagined. There are many examples of mutations and other types of genetic variation associated with the activity of mobile elements. Mutant phe...
متن کاملEvolution and consequences of transposable elements.
Recent studies on transposable elements (TEs) have shed light on the mechanisms that have shaped their evolution. In addition to accumulating nucleotide substitutions over evolutionary time, TEs appear to be especially prone to genetic rearrangements and vertical transmissions across even distantly related species. As a consequence of replicating in host genomes, TEs have a significant mutation...
متن کاملGenetic polymorphism and evolution in parthenogenetic animals. I. Polyploid curculionidae.
The genetic variability at enzyme loci in different triploid and tetraploid parthenogenetic weevil populations has been elucidated by starch gel electrophoresis. The overall genotype of individual weevils belonging to different populations has been determined for over 25 loci. The results are compared with those obtained for diploid bisexual races of either the same or closely related species. ...
متن کاملTransposable elements and host genome evolution.
Several recent reports have challenged the idea that transposable elements (TEs) are mainly 'selfish' or 'junk' DNA with little importance for host evolution. It has been proposed that TEs have the potential to provide host genomes with the ability to enhance their own evolution. They might also be a major source of genetic diversity, allowing response to environmental changes. Because the rela...
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ژورنال
عنوان ژورنال: Current Opinion in Genetics & Development
سال: 2018
ISSN: 0959-437X
DOI: 10.1016/j.gde.2018.04.003