PPT-1 Lecture #3 – Origin of Species

Cartoon gentleman and ape 2 Key Concepts Species concepts Development of reproductive isolation Patterns of speciation Macroevolution Human evolution Evolution continues 3 specie. What is a Species?. Speciation. – the origin of new species. The . biological species concept. defines a species as a population or group of populations whose members have the potential to interbreed with one another in nature to produce viable, fertile offspring, but who cannot produce viable, fertile offspring with members of other species. 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. of Hadron Masses. . Craig Roberts. Strong Interactions in the . Standard Model of Particle Physics. Extract from. . spectrum of nucleon states (resonances) with . . . mass . less-than 2GeV. Experiment (PDG) compared with theory (AO, J, BG). KEY CONCEPTS. • Although many species persist for long periods of time both genotypic and phenotypic changes occur over time.. • Even if change is occurring, individuals that interbreed within a population(s) maintain the status of the population(s) as a species.. Question?. What is a species?. Evolution . theory must also explain how species originate.. Darwin’s “Mystery of mysteries. ”. In the Galápagos Islands Darwin discovered plants and animals found nowhere else on Earth. “Both in space and time, we seem to be brought somewhat near to that great fact—that mystery of mysteries—the first appearance of new beings on this Earth.”. — Darwin. What is a species?. Biological species concept. Retailer Requirements and Surveillance Activities. for. . Food Marketing Institute . Members. September . 30, 2015. Country of Origin Labeling (COOL) is a labeling law that requires retailers, such as full-line grocery stores, . Presentation . to the Canadian Manufacturers and Exporters Association. Mark . N. Sills. . Brian Staples. October 21, 2015. What are rules of origin (“ROO’s”)?. Rules of origin are those rules used to determine the country of origin of a product for purposes of international trade. The lighter detections occur closer to the origin. The darker detections occur farther from the origin. Macroevolution. describes the origination of new taxonomic groups (vs . microevolution. , which deals with change in allele frequency, and frequencies of genotype and phenotype). What is a species?. Reduction in . gene . flow, genetic and phenotypic change in populations. The study of speciation requires that species be real. Speciation. Speciation is the antidote to sex. Keeps together adaptive groups of traits. 209 * Corresponding Author:Address: Department of Anatomical Sciences, School of Medical Sciences, Baqiyatallah University, Tehran, Iran.Tel: +98 (21) 77982031 Vertebral artery is the �rst Department of Anthropology, George Washington University, Washington DC, USA. 334 macropomaClupavus maroccanusSorbininardus apuliensis and Tischlingerichthys viohli(Diogo, 2007; see Fig. 1). This thus Connor Nelson. Arizona State University. Cross-Origin Web Applications. Here is an image:. And another image:. <img src="http://red/">. GET / HTTP/1.0. <img src="http://blue/">. Cross-Origin Web Applications.