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(2009) Trends in Microbiology. - Why Microbial Evolutionary
(2009) Trends in Microbiology. - Why Microbial Evolutionary

... Long-range haplotype: a class of tests designed to detect positively selected alleles that have risen to high frequency in a population in a short period of time, so that recombination has not had time to break down linkage to distant hitchhiking mutations. The test exploits the genome-wide distribu ...
Rapid Post-Flood Speciation: A Critique of the Young
Rapid Post-Flood Speciation: A Critique of the Young

... evidence, they point to populations of mosquitoes, salmon and other creatures that no longer interbreed with their main populations.50,51 However, these are examples of reproductive isolation-as subpopulations get isolated they often won't interbreed with the main population due to behavioral reason ...
session_proposal_Space_Evo_Exp_Ishpssb2013 general
session_proposal_Space_Evo_Exp_Ishpssb2013 general

... Biological explanations have for a long time been thought in terms of two dichotomies: ultimate vs. proximate causal explanations (Mayr 1961), and developmental vs. selectionist explanations (Sober 1984). Explanations in evolutionary biology were supposed to display ultimate causes, and be mostly se ...
Pitchers et al resubmission to Phil Trans Feb2014
Pitchers et al resubmission to Phil Trans Feb2014

... strength of selection across different trait types and fitness measures [33,34,38], as well ...
Reflecting on Darwin
Reflecting on Darwin

... as synonymous to his central term, ‘natural selection’, yet without personifying nature (thus avoiding any religious imbroglio). This simple but resonant phrase provides the starting point for my argument here. 2 Natural selection has often been defined in a much richer way, linked to other theoreti ...
Untitled - Matrix Education
Untitled - Matrix Education

... However, scientists have recently found a few examples of evolutionary processes that seem to somewhat support Lamarck’s theory. An example of this is the new field called ‘Epigenetics’. If interested, you can watch this brief VIDEO (Length 1:47). ...
natural selection
natural selection

... survive and reproduce leads to a gradual change in a population, with favorable characteristics accumulating over generations (natural selection) copyright cmassengale ...
Reviving the Superorganism
Reviving the Superorganism

... individuals can be regarded as groups of alleles. When the A-allele is more fit than its alternative, averaged over all the individuals within which the alleles occur, this is not regarded as an argument against individual selection. On the contrary, such differences are required for traits to be he ...
C. Mechanism: Natural Selection
C. Mechanism: Natural Selection

... animals. For if it were once shown that we are justified in establishing these families; if it were granted that among animals and plants there has been (I do say several species) but even a single one, which has been produced in the course of direct decent from another species; if, for example, it ...
geckies group seminar series
geckies group seminar series

... Iteration is easier to control externally than recursion ...
video slide - Mrs. Favata Biology
video slide - Mrs. Favata Biology

... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Full text
Full text

... But the assumption that, because quantitative genetic theory is able to quite well explain single trait evolution (at least under artificial selection), it can also explain multivariate evolution has not been rigorously tested. The prediction of multitrait response in a natural population of Darwinʼ ...
Chapter 22
Chapter 22

... organisms and their environment over time  If an environment changes over time, natural selection may result in adaptation to these new conditions and may give rise to new species ...
Environmental Grain, Organism Fitness, and Type
Environmental Grain, Organism Fitness, and Type

... Natural selection is the result of differences in fitness, and fitness depends on organisms’ interactions with their environment. But environments vary in space and time, sometimes in extreme ways. Variation in what biologists call patches, habitats, environments, etc.—or what I’ll call subenvironments ...
Lesson Overview
Lesson Overview

... Changes in food supply created selection pressure that caused finch populations to evolve within decades. This evolutionary change occurred much faster than many researchers thought possible. The Grants have documented that natural selection takes place in wild finch populations frequently, and some ...
Thinking beyond organism energy use: a trait
Thinking beyond organism energy use: a trait

... The functional trait-based bioenergetic approach is emergent in many ecological spectra, from the conservation of natural resources to mitigation and adaptation strategies in a global climate change context. Such an approach relies on being able to exploit mechanistic rules to connect environmental ...
Manuscript - Weizmann Institute of Science
Manuscript - Weizmann Institute of Science

... Biology Department, University of Massachusetts Dartmouth, Dartmouth, MA, USA. between different requirements. Con*To whom correspondence should be addressed. E-mail: [email protected] sider two phenotypes v and v ' . If v ' is better at all tasks than v , the latter Biological systems that ne ...
HAMILTON`S FORCES OF NATURAL SELECTION AFTER FORTY
HAMILTON`S FORCES OF NATURAL SELECTION AFTER FORTY

... age dependence of these equilibrium values are Hamilton’s s(x) and s (x) functions. Similarly, in Rose’s (1985) analysis of antagonistic pleiotropy with overlapping generations, it was shown that alleles with multiple pleiotropic effects on age-specific survival and fecundity characters have first- ...
Evolution
Evolution

...  Comparisons of the similarities in these molecules across species reflect evolutionary patterns seen in comparative anatomy and in the fossil record.  Organisms with closely related morphological features have more closely related molecular features. ...
Biology Priority Expectations
Biology Priority Expectations

... Organisms have specialized structures to carry out life functions. Human Systems ...
DNA - Perry Local Schools
DNA - Perry Local Schools

... Organ SystemBody part that carries out specific function. ...
Wallingford Public Schools - HIGH SCHOOL COURSE OUTLINE
Wallingford Public Schools - HIGH SCHOOL COURSE OUTLINE

... The cell membrane regulates movement of substances in and out of a cell based on their size and chemical charge. Understanding the growth and spread patterns of bacteria and viruses enables the development of methods to prevent and treat infectious diseases. Scientific ideas evolve as new informatio ...
What is a population?
What is a population?

... mountains and one living in the valley, no longer mate or exchange alleles in their gene pools. What can happen? 1. With no gene flow, the two populations will remain identical with each other. 2. With no gene flow, the two populations may become so different that they become different species. 3. W ...
Natural Selection
Natural Selection

... adaptation to the environment and the origin of new species as closely related processes  From studies made years after Darwin’s voyage, biologists have concluded that this is what happened to the Galápagos finches ...
Mate-recognition and species boundaries in the ascomycetes
Mate-recognition and species boundaries in the ascomycetes

... that a conversion to self-fertility or asexuality reduces gene flow between individuals of the same population just as much as between two different populations. In the extreme circumstance, a completely selfing or asexual species, each individual will give rise to a genetically isolated lineage or ...
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Adaptation

In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection. Adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation. Adaptations enhance the fitness and survival of individuals. Organisms face a succession of environmental challenges as they grow and develop and are equipped with an adaptive plasticity as the phenotype of traits develop in response to the imposed conditions. The developmental norm of reaction for any given trait is essential to the correction of adaptation as it affords a kind of biological insurance or resilience to varying environments.
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