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Evolution Site - Teaching About Evolution Despite the best efforts by biology teachers, there are still misconceptions regarding evolution. Pop science nonsense has led people to believe that biologists aren't believers in evolution. This site, which is a complement to the PBS program that provides teachers with resources that support the evolution of education while avoiding the types of misconceptions that hinder it. It's laid out in a "bread crumb" format to aid in navigation and orientation. Definitions Evolution is a complex and challenging subject to teach effectively. People who are not scientists often have a difficult time understanding the subject, and some scientists even use a definition that confuses it. This is particularly relevant when it comes to the definition of the words. It is therefore essential to define the terms used in evolutionary biology. Understanding Evolution's website does this in a straightforward and useful way. The website is a companion to the show that premiered in 2001, but is also an independent resource. The content is presented in an organized way that makes it easy to navigate and understand. The site defines terms like common ancestor and the gradual process. These terms help to define the nature and significance of evolution with other scientific concepts. The site also provides an overview of how the concept of evolution has been tested and validated. This information will help to dispel the myths that are created by the creationists. You can also access a glossary which includes terms used in evolutionary biology. These terms include: Adaptation: The tendency of heritable traits to become better suited to a particular environment. This is the result of natural selection. Organisms that have better-adapted traits are more likely than those with less adaptable traits to survive and reproduce. Common ancestor: The most recent common ancestor of two or more different species. hop over to here can be identified by studying the DNA of the species. Deoxyribonucleic Acid: A huge biological molecular that contains the necessary information for cell replication. The information is contained in nucleotides arranged in sequences that are strung together to form long chains, referred to as chromosomes. Mutations are the cause of new genetic information in cells. Coevolution is the relationship between two species, where the evolutionary changes of one species influence evolutionary changes of the other. Examples of coevolution include the interactions between predator and prey or host and parasite. Origins Species (groups of individuals that can interbreed) change through a series of natural changes in the characteristics of their offspring. These changes can be caused by many factors, such as natural selection, gene drift, and mixing of the gene pool. The development of a new species could take thousands of years and the process may be slowed down or speeded up by environmental factors like climate change or the competition for food or habitat. The Evolution site tracks through time the evolution of different animal and plant groups with a focus on major changes in each group's past. It also examines the evolution of humans and is a subject of particular importance for students. When Darwin wrote the Origin of Species, only a handful of antediluvian human fossils had been discovered. The most famous among them was the skullcap and associated bones found in 1856 in the Little Feldhofer Grotto in Germany, which is now known to be an early Homo neanderthalensis. Although the skullcap was not published until 1858, a year before the first edition of the Origin was published, it is highly unlikely that Darwin had heard or seen of it. While try this is focused on biology, it also includes a good deal of information about geology as well as paleontology. The Web site has a number of aspects that are quite impressive, including the timeline of how climate and geological conditions have changed over time. It also includes a map showing the distribution of fossil groups. The site is a companion for a PBS TV series but it can also be used as a resource for teachers and students. The site is well-organized and provides easy links to the introductory content of Understanding Evolution (developed under the National Science Foundation's funding) and the more specialized features on the museum's website. These hyperlinks make it easy to transition from the cartoon style of Understanding Evolution pages into the more sophisticated worlds of research science. In particular there are links to John Endler's experiments with Guppies that demonstrate the importance of ecology in evolutionary theory. Diversity The evolution of life has resulted in a variety of plants, animals and insects. Paleobiology is the study of these creatures within their geological context and has a number of advantages over the modern observational and research methods for analyzing evolutionary processes. Paleobiology can examine not only processes and events that happen regularly or over time, but also the distribution and frequency of different groups of animals in space throughout geological time. The Web site is divided into several optional ways to learn about evolution which include "Evolution 101," which takes the viewer on a liner path through the nature of science and the evidence that supports the theory of evolution. The path also examines myths about evolution and also the history of evolutionary thought. Each of the main sections of the Evolution website is equally well-developed, and includes materials that are suited to a variety of educational levels and teaching styles. The site has a range of multimedia and interactive resources that include animations, video clips and virtual laboratories, in addition to its general textual content. The content is organized in a nested, bread crumb fashion that aids navigation and orientation within the large web site. The page "Coral Reef Connections" For instance, the page "Coral Reef Connections" provides a comprehensive overview of the relationships between corals and interactions with other organisms and zooms in on a single clam, which is able to communicate with its neighbors and respond to changes in the conditions of the water that occur at the reef level. This page, as well as the other multidisciplinary interactive and multimedia pages gives a good introduction to the many areas of evolutionary biology. The material also provides an overview of the importance of natural selection as well as the concept of phylogenetic analysis, which is a key method to understand evolutionary change. Evolutionary Theory For biology students, evolution is a key thread that connects all the branches of the field. A wide selection of resources helps teachers teach evolution across all disciplines of life sciences. One resource, a companion to the PBS television series Understanding Evolution, is an excellent example of a Web site that provides the depth and breadth of its educational resources. The site has a variety of interactive learning modules. It also has a "bread crumb structure" that assists students in moving away from the cartoon style of Understanding Evolution and onto elements on this large website more closely connected to the realms of research science. An animation that introduces the concept of genetics, which links to a page about John Endler's experiments with artificial selection using Guppies in native ponds in Trinidad. The Evolution Library on this website contains a large multimedia library of assets related to evolution. The content is organized in curricula-based paths that correspond to the learning objectives outlined in biology standards. It includes seven short videos designed for classroom use. These can be streamed or purchased as DVDs. A number of important questions remain in the midst of evolutionary biology, such as what triggers evolution and how fast it occurs. This is especially applicable to human evolution where it's been difficult to reconcile that the physical characteristics of humans derived from apes with religious beliefs that hold that humans are unique in the universe and has an exclusive place in the creation, with soul. There are a variety of other ways evolution can take place and natural selection being the most popular theory. However scientists also study different types of evolution such as mutation, genetic drift, and sexual selection, among others. While many fields of scientific study conflict with the literal interpretations of religious texts, the concept of evolution biology has been a subject of intense debate and resistance from religious fundamentalists. Certain religions have reconciled their beliefs with evolutionary biology, while others haven't.
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