Exact(5)
Relocated genes are more pleiotropic in their expression, and the excess relocation off the X chromosome is driven by a process other than selection for testis expression.
This suggests that retroposition may drive the excess relocation off the D. melanogaster X chromosome.
We cannot, however, identify the specific selective force responsible for the excess relocation off the X chromosome.
It is unclear why there would be excess relocation off the ancestral X in D. melanogaster and D. pseudoobscura but not in D. willistoni.
This suggests that retroposition drives gene relocation from the X chromosome in most lineages, but DNA duplications are responsible for relocation off the X in D. pseudoobscura, consistent with other results (Vibranovski et al. 2009).
Similar(54)
The forces driving the relocation of genes off the X chromosome (i.e., duplication followed by loss of the ancestral copy) appear to differ from those that drive the duplication of genes from the X chromosome to the autosomes (i.e., duplication with retention of the ancestral copy).
"For many Native American children, exposure to baseball came with their relocation to off-reservation government boarding schools," the timeline states.
Harte attributed an ulterior motive to his relocation: the off-field behaviour of Richardson and other South Australian players had displeased the South Australia Cricket Association (SACA), which was looking for new leadership.
The continued growth of the collection in a wide variety of formats during the 1980s and '90s necessitated the off-site relocation of some materials to storage facilities in Fort Meade, Maryland, and to the Packard Campus for Audio Visual Conservation Center in Culpeper, Virginia, the library's state-of-the-art facility for audiovisual preservation.
They reported that the majority of these duplications involved relocation of the duplicate away from the parental gene, with relocations off the X-chromosome to the autosomes being 60% more frequent than expected by chance.
However, the observed excess of gene relocations off the X chromosomes identified in Drosophila and mammals (Meisel et al. 2009; Vibranovski et al. 2009; Moyle et al. 2010) occurred through both DNA-based and RNA-based mechanisms.
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