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Macro Evolution and Speciation PPT - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Modes of speciation. • Speciation can be slow and gradual or, as described by punctuated equilibrium, can occur in “bursts” followed by relatively quiet periods. The Basic Idea of Evolution. Chapter 24: The Origin of Species (Macroevolution) Macroevolution is essentially the formation of new species (speciation) and accompanying events Reproductive isolation can occur in a variety of ways Reproductive isolation is the key to cladogenic speciation Cladogenic speciation has two modes: allopatric speciation and sympatric speciation Evolution occurs in both micro and macro level. • At times of ecological stress, extinction rates can be rapid, and mass extinctions are often followed by adaptive radiation, the rapid evolution of species when new habitats/niches become available. What are species anyway, and how do new ones evolve? PowerPoint Evolution and speciation are two processes which bring changes to organisms. Definition of a species with examples Evolution and natural selection with many examples and fill in the blanks tasks. Speciation. Contains 84 PowerPoint slides which cover: Biodiversity: Species richness, species abundance and species diversity. 4. speciation 14 4.1 species concepts 16 4.2 isolation of populations 17 4.3 types of speciation 18 4.3.1 allopatric speciation 18 4.3.2 sympatric speciation 19 4.4 phylogenetic relationship 20 5. insects as models in evolution 21 5.1 plant insect interactions 21 6. examples of insect evolution and speciation … There is a lot of science behind the theory of evolution. By David Knuffke. Here, you can explore different ways to define a species and learn about the various processes through which speciation can occur. There is phylogenetic evidence for higher rates of diversification in tropical clades, and palaeontological data demonstrate higher rates of Geographic and reproductive isolation with examples. Gene mutations, gene flow, genetic drift, and natural selection aids the evolution in micro level. Scientists and researchers have done intensive studies to show how living things evolved and how traits and characteristics passed on from generations to generations.. Sign In. Provided under the terms of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Speciation of species of the Galapagos Islands. human-chimp speciation ~ 1. inferring the mode of speciation from genomic data: a study of the great apes 2. genetic evidence for complex speciation of humans and chimpanzees 05.dec.06 - humanchimp speciation 1' inferring the mode of speciation from genomic data: a study of the great ap speciation (caused by increased opportunities for the evolution of reproductive isolation, or faster molecular evolution, or the increased importance of biotic interactions), or due to lower extinction rates. The key to speciation is the evolution of genetic differences between the incipient species.For a lineage to split once and for all, the two incipient species must have genetic differences that are expressed in some way that causes matings between them to … 6 of 7 of my Evolution Domain. Tes Global Ltd is registered in England (Company No 02017289) with its registered office … This website and its content is subject to our Terms and Conditions. Evolution Powerpoint Notes--evidence and speciation.doc. Evolution Powerpoint Notes--evidence and speciation.doc. Speciation is the generation of two species from a pre-existing species. Image Credits: Biology (Campbell) 9th edition, copyright Pearson 2011, & The Internet.

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