We found that the multiple sex chromosomes provide an evolutionarily dynamic system affected by repeated gains and losses of X chromosomes, and repeated shifts in the localization of the rDNA loci between autosomes and heterosomes, with potential consequences for speciation.
The repeated shifting of a debouching stream from one side of a fan to the other spreads the sediment widely and almost uniformly.
It took a marathon 28 years to develop and build, and was a victim of financing shortfalls, bureaucratic inertia and repeated shifts in power under alternate military and civilian governments, which often undid what their predecessors had started.
Or Mutual Core's repeated shifts from a wheezing keyboard – it was doubtless built in a laboratory by the provost of the Massachusetts Institute of Technology and professor Brian Cox, but it sounds like a 13th-century portative organ – to electronic bombardment.
The chain of events exposed a campaign cycling through repeated shifts in strategy as it sought an effective counter to the bruising attacks of Mr. Romney's super PAC, which portrayed Mr. Gingrich as a Washington influence-peddler.
But throughout film history, repeated shifts in America's cultural confidence have led to reactions against those classic styles of Americanness – whether it's the rejection of Main Street optimism in 1940s film noir or the Vietnam-era rise of the paranoid thriller.
His unreliability in political issues, and repeated shifts in allegiance, might have contributed to this.
Or "Mutual Core"'s repeated shifts from a wheezing keyboard – it was doubtless built in a laboratory by the provost of the Massachusetts Institute of Technology and professor Brian Cox, but it sounds like a 13th-century portative organ – to electronic bombardment".
As mentioned above, repeated shifts in the extent of forest and savannah habitats during the Pleistocene may have promoted the isolation of local baboon populations.
Similarly, these results suggest that repeated shifts in the sleep-wake cycle and the circadian timing system in shift workers may result in recurrent and longer-term changes in circadian period.
