Sentence examples for barrier to the evolution from inspiring English sources
Periods of intense cold have also been suggested as a barrier to the evolution of multicellular life.
Moreover, the failure of H5N1 to emerge as a pandemic strain despite the wide variety of species infected since 2003 suggests that there is a significant natural barrier to the evolution of H5 HA receptor binding specificity.
Characteristics of habitat are also an ecological barrier to the evolution of H. ovalis in the smaller scale area.
It appears that life-form per se was not the barrier to the evolution of perennial grains.
Thus, changes in dosage may represent a minor barrier to the evolution of a hemizygous X in males for genes in long pathways.
Because atypical PrPres and PrPSc are significantly different in structure [ 11, 12, 26, 27], a transition from the former to the latter is believed to represent the major barrier to the evolution of authentic PrPSc.
And yet the model also documents the barriers to the evolution of eusociality, since it typically requires a set of unusual mutations and very particular ecological conditions.
Similarly, Ewald and Swain Ewald (this issue) argue that evolution has acted on multicellular organisms to create five primary barriers to the evolution of metastatic cancer: cell cycle arrest, apoptosis, limits to the number of cell divisions, cell adhesion, and asymmetric cell division.
The high level of successful MGE transfer between CC398 clones during colonization suggests few barriers to the evolution of strains that can carry MGE that may allow them to colonize a variety of hosts, resist a wide range of antibiotics, and produce a diverse array of virulence factors.
However, research suggests that affective factors may serve as a barrier to the development of knowledge of evolution, which in turn could constrain acceptance of the theory (Brem et al. 2003; Smith 1994).
This perception can pose a significant barrier to the teaching of evolution and other sciences if students assume beforehand that the topic contradicts what they are supposed to believe from a religious standpoint.
