Example sentences for: acceleration

How can you use “acceleration” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • In general, however, only a small fraction of sites in some genes appears to evolve under positive selection [ 15], and relaxation of purifying selection is likely to be the main mechanism behind the acceleration of evolution after duplication.

  • This microscope is equipped with Hitachi's patented "Dual-Bias" which allows extremely high emission currents at acceleration voltages of 5 kV and lower.

  • Assuming that the acceleration of evolution observed in paralogs is primarily due to a relaxation of purifying selection, the fitness potential variable describing the fitness function of diverging gene copies can be thought of as the effective amount of functional protein, which depends both on gene duplication and point mutations.

  • For the bacterial and archaeal species groups, the vast majority of these comparisons were inconclusive because the evolutionary distance between phylogenetic partitions resulted in a saturation of K s . The more closely related human-mouse-rat group did not show saturation of K s . Comparisons of K s and K a for functionally diversified mammalian protein sets did not reveal any cases with K a > K s . This is probably due to the fact that, if directional selection led to the acceleration of the amino-acid substitution rate in these proteins, it acted in an episodic manner [ 6, 7] and on a minority of residues against a constant background of purifying selection [ 8, 9].

  • Such a genome-scale test allowed for a robust assessment of the rate constancy of protein evolution, as well as the detection of multiple cases of accelerated evolutionary change and a quantitative assessment of the fraction of genes that undergo such acceleration.

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