Under a scenario when genotypes 00 and 11 confer high fitness and 01 and 10 confer low fitness, evolution of 00 -> 11 may occur when two mutations arise simultaneously in the same genotype, which then has a chance for fixation.
On the other hand, the majority (64.7%) of the 17 EriR isolates were distributed among five of the nine CCs detected, suggesting that multiple clusters may have arisen simultaneously, mostly by independent acquisition of resistance genes by different strains.
Once the novel trait arises, the time between speciation events will occur more quickly, and may be so fast that more than two species arise simultaneously.
Self-reflection and trust arise simultaneously.
Recent data suggest that lupus autoantibodies do not arise simultaneously, but rather develop sequentially over time [14], [15].
First, it is possible that polarization of Cdx2 mRNA does not arise simultaneously in all blastomeres.
Furthermore, primordia emergence from these meristems is disrupted such that several primordia arise simultaneously instead of sequentially.
Although the two claimed species clearly overlapped in time, Haile-Selassie says, they may not have arisen simultaneously.
Moreover, confound effects may arise when other fibers are stimulated simultaneously; for example, high-intensity electrical stimulation of peripheral nerves activates both Aβ-afferents and smaller fibers.
Because unintended consequences may arise if all invasive species cannot be removed simultaneously, the order of their removal is of paramount importance to ecological restoration.
