Sentence examples for has occurred multiple from inspiring English sources

"One would think that mixing has occurred multiple times for a long time," Castellano says.

Alternatively, in keeping with previous reports that the presence of 1555A>G mutation has occurred multiple times during evolution of mtDNA in Eastern Asia (Lu et al., 2010b).

arabiensis (positions 416, 624 and 701), introgression has occurred multiple times, after which, according to the shared polymorphism between the An.

These findings reinforce our conclusion that increasing genomic complexity of the Mup gene subfamily is not limited to rodents, but is instead a mechanism that has occurred multiple times in parallel in the mammalian lineage, consistent with a species-specific function.

Thus, green alga-involved secondary endosymbiosis has occurred multiple times (at least twice) in eukaryotes.

Polyploidy or whole genome duplication (WGD) has occurred multiple times throughout the evolutionary history of plants.

The officials said the attacks had been "on a small scale" but had occurred "multiple times" over the past year.

In fact, shifts in home-court advantage of the magnitude they identified (about one point per hundred possessions) have occurred multiple times in the past 20 seasons alone.

Recent (2009) studies suggest that the ancestral ecological state of the Ascomycota was saprobism, and that independent lichenization events have occurred multiple times.

Significant reductions of the ascomata have occurred multiple times across ascomycetes.

To explain the similarities in the repetitive regions by these means requires the convergence of thousands of nucleotides within a silk gene to encode either entirely MaSp1 or MaSp2 motifs, and for such convergences to have occurred multiple times in different spider lineages.