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Evolution Site – Teaching About Evolution Despite the best efforts of biology educators, misinformation about evolution remain. Pop science nonsense has led people to believe that biologists aren't believers in evolution. This rich Web site – companion to the PBS series – provides teachers with materials that promote evolution education and help avoid the kinds of myths that hinder it. It's arranged in a nested “bread crumb” format for ease of navigation and orientation. Definitions Evolution is a complex and difficult subject to teach well. It is often misunderstood by non-scientists and even some scientists have been guilty of using a definition that confuses the issue. This is particularly applicable to discussions about the definition of the word itself. It is therefore essential to define the terms that are used in evolutionary biology. The website for the PBS show, Understanding Evolution, does this in a clear and useful manner. The site is a companion to the show that premiered in 2001, but it also functions as an independent resource. The material is presented in a way that aids navigation and orientation. The site defines terms like common ancestor, gradual process and so on. These terms help to define the nature of evolution and its relationship to evolution to other scientific concepts. The website provides a summary of the way that evolution has been examined. This information can help dispel myths created by creationists. It is also possible to get a glossary of terms that are used in evolutionary biology. These terms include: Adaptation is the tendency of heritable traits to become better suited to an environment. This is the result of natural selection, which occurs when organisms that have better-adapted characteristics are more likely to survive and reproduce than those with less adapted traits. Common ancestor: The latest common ancestor of two or more species. By analyzing the DNA from these species, it is possible to identify the common ancestor. Deoxyribonucleic Acid: A huge biological molecular that contains the information required 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 responsible for the creation of new genetic information within cells. Coevolution is a relationship between two species in which evolutionary changes in one species are dependent on evolutionary changes in the other. Examples of coevolution are the interactions between predator and prey or parasite and host. Origins Species (groups of individuals who can interbreed) change through an array of natural changes in the traits of their offspring. 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 can take thousands of years, and the process can be slowed down or accelerated by environmental conditions such as climate change or competition for food or habitat. The Evolution site tracks through time the evolution of different animal and plant groups and focuses on major changes in each group's history. It also examines the evolutionary history of humans, a topic that is crucial for students to understand. When Darwin wrote the Origin of Species, only a handful of antediluvian human fossils had been found. The famous skullcap, with the associated bones, was discovered in 1856 in the Little Feldhofer Grotto of Germany. It is now known as an early Homo neanderthalensis. It is highly unlikely that Darwin knew about the skullcap when it was published in 1858, a year after the publication of the first edition of The Origin. 에볼루션바카라 is primarily an online biology resource, but it also contains lots of information about paleontology and geology. Among the best features of the website are a series of timelines which show how geological and climatic conditions changed over time, as well as an outline of the distribution of some fossil groups that are featured on the site. While the site is a companion piece to a PBS television series, it also stands on its own as an excellent resource for teachers and students. The site is very well-organized and offers clear links between the introductory information in Understanding Evolution (developed with support from the National Science Foundation) and the more sophisticated components of the museum's Web site. These hyperlinks help users move from the cartoon-like style of the Understanding Evolution pages to the more sophisticated world of research science. There are also links to John Endler's experiments with guppies that illustrate the importance of ecology in evolutionary theory. Diversity The evolution of life has led to a variety of animals, plants and insects. Paleobiology is the study of these creatures in their natural environment, has many advantages over modern observational or experimental methods for studying evolutionary processes. In addition to examining processes and events that occur regularly or over a lengthy period of time, paleobiology allows to analyze the relative abundance of different kinds of organisms as well as their distribution throughout the geological time. The website is divided into different paths that can be chosen to learn about evolution. One of these paths, “Evolution 101,” takes the viewer through the nature and evidence of evolution. The path also examines myths about evolution as well as the history of evolutionary thought. Each of the other sections of the Evolution site is equally developed, with materials that support a variety of curriculum levels and pedagogical styles. In addition to the general textual content, the site also has an extensive selection of multimedia and interactive resources, such as videos, animations and virtual labs. The breadcrumb-like organization of the content aids in navigation and orientation on the vast web site. For instance, the page “Coral Reef Connections” provides a comprehensive overview of the relationships between corals and their interactions with other organisms. Then, it zooms in on a single clam that is able to communicate with its neighbors and react to changes in the water conditions that take place at the level of the reef. This page, along with the other multidisciplinary interactive and multimedia pages gives a good introduction to many topics in evolutionary biology. The content includes an explanation of the role of natural selectivity and the concept phylogenetics analysis which is a crucial tool for understanding evolutionary change. Evolutionary Theory Evolution is a common thread that connects all branches of biology. A rich collection of resources helps teachers teach about evolution across all life sciences. One resource, which is a companion to the PBS television series Understanding Evolution, is an outstanding example of an Web site that offers both depth and breadth in its educational resources. The site has a variety of interactive learning modules. It also features an “bread crumb structure” that allows students to move away from the cartoon-like style of Understanding Evolution and onto elements on this site that are more closely related to the realms of research science. For instance, an animation introducing the notion of genetic inheritance leads to a page highlighting John Endler's experiments with artificial selection with guppies in native ponds of Trinidad. Another resource that is worth mentioning is the Evolution Library on this Web website, which includes an extensive library of multimedia items related to evolution. The content is organized into curricula-based paths that correspond to the learning goals set forth in the standards for biology. It contains seven videos specifically designed for use in classrooms, and can be streamed for no cost or purchased on DVD. Evolutionary biology is an area of study with a lot of important questions to answer, such as what triggers evolution and the speed at which it happens. This is especially true for humans' evolution where it was a challenge to reconcile religious beliefs that held that humans have a distinct place in creation and a soul with the notion that our physical traits evolved from apes. There are a myriad of other ways in which evolution could occur including natural selection, which is the most widely accepted theory. However scientists also study other kinds of evolution like mutation, genetic drift, and sexual selection, among other things. While many scientific fields of study conflict with the literal interpretations of religious texts, evolution biology has been a subject of intense debate and resistance from religious fundamentalists. Some religions have reconciled their beliefs to evolution while others haven't.