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The idea that meiotic drivers and their suppressors may govern speciation is supported by observations that mouse Y chromosomes lacking certain genetic loci produce female-biased offspring, implying these loci encode suppressors of drive. [9] Moreover, matings of certain mouse strains used in research results in unequal offspring ratios.
Hospital labs may also outsource their lab, known as outreach, to run tests; however, health insurers may pay the hospitals more than they would pay a laboratory company for the same test, but as of 2016, the markups were questioned by insurers. [29] Rural hospitals, in particular, can bill for lab outreach under the Medicare's 70/30 shell rule ...
Linux is the leading operating system on servers (over 96.4% of the top one million web servers' operating systems are Linux), [48] leads other big iron systems such as mainframe computers, [clarification needed] [49] and is used on all of the world's 500 fastest supercomputers [h] (as of November 2017, having gradually displaced all competitors).