Evolution Transforms Pushed Waves into Pulled Waves
نویسندگان
چکیده
منابع مشابه
Spatial gene drives and pushed genetic waves.
Gene drives have the potential to rapidly replace a harmful wild-type allele with a gene drive allele engineered to have desired functionalities. However, an accidental or premature release of a gene drive construct to the natural environment could damage an ecosystem irreversibly. Thus, it is important to understand the spatiotemporal consequences of the super-Mendelian population genetics bef...
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Short Abstract: Traveling waves describe diverse natural phenomena from crystal growth in physics to range expansions in biology. Two classes of waves exist with very different properties: pulled and pushed. Pulled waves are noisy because they are driven by high growth rates at the expansion edge, where the number of organisms is small. In contrast, fluctuations are suppressed in pushed waves b...
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We investigate the inside structure of one-dimensional reaction-diffusion traveling fronts. The reaction terms are of the monostable, bistable or ignition types. Assuming that the fronts are made of several components with identical diffusion and growth rates, we analyze the spreading properties of each component. In the monostable case, the fronts are classified as pulled or pushed ones, depen...
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When a marble rolls down a sloped surface it eventually oscillates about a low point. With friction, it finally comes to a rest at the low point. Electrons are pulled towards an atomic nucleus like the marble is pulled downhill towards a low point by gravity. There are no frictional forces on the electron, but an electron circling around a nucleus creates radiation and these electromagnetic wav...
متن کاملWeakly pushed nature of "pulled" fronts with a cutoff.
The concept of pulled fronts with a cutoff epsilon has been introduced to model the effects of the discrete nature of the constituent particles on the asymptotic front speed in models with continuum variables (pulled fronts are the fronts that propagate into an unstable state, and have an asymptotic front speed equal to the linear spreading speed v* of small linear perturbations around the unst...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 2020
ISSN: 0003-0147,1537-5323
DOI: 10.1086/707324