Tracing the first step to speciation: ecological and genetic differentiation of a salamander population in a small forest 来自 Wiley 喜欢 0 阅读量: 68 作者:S Steinfartz,M Weitere,D Tautz 摘要: Mechanisms and processes of ecologically driven adaptive speciation are best studied in natural situations...
We consider a two-step growth process. First, a population with inoculum size \(n_0\) grows until a time t according to the simple birth process, yielding a distribution \(P_t(n \, | \, n_0)\) over abundances N(t). Second, at time t population growth becomes deterministic and ...
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Living elephants usually touch down phase with their heels and step off of their toes29. Patterns of depth-deformation for P. antiquus from MTS are consistent with the plantar pressure data for modern elephants where, for similar substrate conditions, there are no significant depth differences ...
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longicaudis constitutes the first step towards supporting conservation efforts using genomic tools in this and other mustelids inhabiting aquatic neotropical environments under considerable contemporary anthropogenic disturbance.J. Antonio BaezaDepartment of Biological Sciences, Clemson University, Clemson, SC, ...
Experiments on AI with fresh semen were carried out with the aim of reducing infertility resulting from the following situations: no compatible pairs; imprinted individuals (hand-reared birds may imprint on humans and be reluctant to mate with conspecifics); difficulties in natural copulation because ...
We trained a PLS-DA model, in two steps. The first step consisted in determining the optimal number of components through repeated 4-fold cross-validation with 50 repeats, with the number of components being chosen based on the AUC values obtained. After determining the optimal number of compon...
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At each step, sugar-phosphate monomers were added to the reaction volume ΔV in the quantity to keep their total concentration constant. The value of ΔV was chosen so that the system contained on average about 2000 monomers. At each time step the following reactions were considered:...