Selfish element
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The respiratory pathogen Streptococcus pneumoniae (the pneumococcus) is a genetically diverse bacterium associated with over 101 immunologically distinct polysaccharide capsules (serotypes).
23p vicwell 29-02-2024 1 1 Download
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The Sb supergene in the fire ant Solenopsis invicta determines the form of colony social organization, with colonies whose inhabitants bear the element containing multiple reproductive queens and colonies lacking it containing only a single queen.
22p vihagrid 30-01-2023 3 3 Download
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Coxiella burnetii is a Gram-negative gammaproteobacterium and zoonotic agent of Q fever. C. burnetii’s genome contains an abundance of pseudogenes and numerous selfish genetic elements. MITEs (miniature invertedrepeat transposable elements) are non-autonomous transposons that occur in all domains of life and are thought to be insertion sequences (ISs) that have lost their transposase function. Like most transposable elements (TEs), MITEs are thought to play an active role in evolution by altering gene function and expression through insertion and deletion activities.
16p vibeauty 23-10-2021 12 1 Download
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B chromosomes (Bs) are extra elements observed in diverse eukaryotes, including animals, plants and fungi. Although Bs were first identified a century ago and have been studied in hundreds of species, their biology is still enigmatic. Recent advances in omics and big data technologies are revolutionizing the B biology field.
16p vilichoo2711 23-06-2021 14 1 Download
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Transposable elements, found in almost all organisms, are short sequences of DNA that have the ability to move from one location to the other locations in the genome. Transposons make up 10% of eukaryotic genomes. They provide a means for genomic change and variation, particularly in response to stress (McClintock’s stress hypothesis).There is no known example of transposon playing a normal role in development. They are called as selfish DNA and can be used as genetic markers, as mutagens for transposon tagging and isolation of gene, as transformation vectors and as cloning vehicle.
11p chauchaungayxua4 18-03-2020 17 2 Download