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2019
The spectacular diversity of life on earth presents one of the most intriguing questions for biologists: why and how does the variation among organisms arise? One powerful concept that has its origins with Darwin (late 1800s) and was developed in detail during the Modern Synthesis (early to mid-1900s), is “adaptive radiation.” This evolutionary process
Linyi Zhang, Scott P. Egan
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The spectacular diversity of life on earth presents one of the most intriguing questions for biologists: why and how does the variation among organisms arise? One powerful concept that has its origins with Darwin (late 1800s) and was developed in detail during the Modern Synthesis (early to mid-1900s), is “adaptive radiation.” This evolutionary process
Linyi Zhang, Scott P. Egan
+4 more sources
Online Adaptive Radiation Therapy
International Journal of Radiation Oncology*Biology*Physics, 2017The current paradigm of radiation therapy has the treatment planned on a snapshot dataset of the patient's anatomy taken at the time of simulation. Throughout the course of treatment, this snapshot may vary from initial simulation. Although there is the ability to image patients within the treatment room with technologies such as cone beam computed ...
Stephanie Lim-Reinders +4 more
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Functional Adaptation in Radiation Therapy
Seminars in Radiation Oncology, 2019The promise of adaptive therapy to improve outcomes in radiation oncology has been an area of interest and research in the community for many years. One of the sources of data that can be used to drive adaptive therapy is functional information about the tumor or normal tissues.
Martha M, Matuszak +7 more
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Adaptation and adaptive radiation
2019A key outcome of evolution by natural selection is adaptation. Since the beginning of the age of genetics, evolutionary biologists have focused on the evolution of nuclear genes as the basis for adaptation. Changes to the mitochondrial genome were long viewed as the result of drift and unimportant to organism fitness.
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Hybridization and adaptive radiation
Trends in Ecology & Evolution, 2004Whether interspecific hybridization is important as a mechanism that generates biological diversity is a matter of controversy. Whereas some authors focus on the potential of hybridization as a source of genetic variation, functional novelty and new species, others argue against any important role, because reduced fitness would typically render hybrids
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Explicit adaptive-grid radiation magnetohydrodynamics
Journal of Computational Physics, 1992Time dependent 1-D radiation-magnetohydrodynamics as a model for inertial confinement fusion is presented. Discussion on an adaptive space grid depending on space gradients of the variables is given, and the equations are transformed to moving grid. The paper deals with upwind finite control volume space discretization, implicit time discretization for
Yasar, Osman, Moses, Gregory A.
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2003
Adaptive radiation is the simultaneous diversification of a lineage into numerous sublineages and specializations (Simpson, 1953a). All of the species of a radiation constitute a monophyletic group, and they often share some innovative trait or set of traits (sometimes called a key innovation—Liem, 1973) that is thought to have allowed the lineage to ...
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Adaptive radiation is the simultaneous diversification of a lineage into numerous sublineages and specializations (Simpson, 1953a). All of the species of a radiation constitute a monophyletic group, and they often share some innovative trait or set of traits (sometimes called a key innovation—Liem, 1973) that is thought to have allowed the lineage to ...
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MRI-Guided Adaptive Radiation Therapy
Seminars in Radiation OncologyMagnetic resonance imaging-guided radiation therapy (MRIgRT) has improved soft tissue contrast over computed tomography (CT) based image-guided RT. Superior visualization of the target and surrounding radiosensitive structures has the potential to improve oncological outcomes partly due to safer dose-escalation and adaptive planning. In this review, we
Cecil M, Benitez +3 more
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Chronicles of an adaptive radiation
Nature Ecology & Evolution, 2019The adaptive radiation of notothenioid fishes after the Antarctic glaciation was preceded by rapid genomic evolution and reduced bone density.
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