Evolutionary change is also driven by random processes. 遗传漂变,如自然灾害等瓶颈事件(bottleneck),会影响种群的组成,基因频率会发生变化。 Biological evolution is supported by scientific evidence from many disciplines, including mathematics. 生物进化的证据: 化石证据(fossil):通过对比发现地区岩石年龄,碳-14...
aGeographic range ofP. strobiformis(purple) andP. flexilis(brown) on the elevational political map of North-America, with the study region highlighted by a rectangular box. Range maps were obtained from ref.103forP. strobiformisand from ref.104forP. flexilis. Background elevational map in ...
The simplest possible form of cheating is to just not cooperate. Bacteria have provided numerous examples of individuals that cheat by ‘not cooperating’. For example, when the iron is limited, bacteria produce and release siderophores, which are molecules that scavenge iron from the environment an...
inadequate understanding of the nature of science, religion, various psychological factors, and political and social factors. This multiplicity of causes is not sufficiently appreciated by many scientists, educators, and
Gaseous N emissions arising from biological denitrification in soils is of economic and environmental consequence. However, the biological and physical processes controlling emissions are complex, and, therefore, mathematical simulation ... RF Grant,M Nyborg,JW Laidlaw - 《Soil Science》 被引量: 0发表...
our motivation to consider these broader conceptualizations of evolution for education is not merely driven by a concern for teaching current scientific discourse and nature of science. We argue that an understanding of evolution as it emerges from these interdisciplinary developments may help overcome so...
The data product is a reusable and easily accessible asset that can be readily consumed by teams or applications. This level of rewiring is non-negotiable—merely focusing on one or two actions isn’t enough. These capabilities are the engine for building a data-driven enterprise that ...
It is related to the local mean curvature H, which in thermodynamics is the local geometric property determining the mechanical effects that control processes, such as sintering, that are driven by ‘capillarity’ effects.2 The average mean surface curvature may be defined to be [3.3]<H>≡∫∫...
Overall, orbital shape diversity is clearly driven by dinosaurs, and in particular large carnivorous theropods for the reasons outlined above. The morphospace occupation and evolutionary trends of all studied archosauromorphs largely follow the general diversity patterns for these groups. During the Trias...
We predict that +1q in breast cancer is driven by Notch signaling through increased expression of 1q-resident γ-secretase genes. Results Forward genetic whole chromosome copy number screens To assess selective potentials of various aneuploidies, whole chromosome forward genetic screens were performed ...