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Evolution Site - Teaching About Evolution

Despite the best efforts by biology teachers, there are still misconceptions about evolution. People who have absorbed pop science nonsense often assume that biologists do not believe in evolution.

This rich website - companion to the PBS series It provides teachers with materials that promote evolution education and avoids the kinds of myths that hinder it. It's arranged in a nested "bread crumb" format to make it easy for navigation and orientation.

Definitions

It's difficult to properly teach evolution. People who are not scientists often have a difficult time understanding the subject and some scientists employ a definition that confuses it. This is especially true when it comes to discussions about the meaning of the word itself.

As such, it is important to define terms that are used in evolutionary biology. The website for the PBS show, Understanding Evolution, does this in a clear and helpful manner. It is an accompaniment to the 2001 series, but also a resource on its own. The material is presented in a way that assists in navigation and orientation.

The site defines terms such as common ancestor and gradual process. These terms help frame the nature of evolution as well as its relation to other scientific concepts. The site then offers an overview of how the concept of evolution has been vetted and verified. This information can be used to dispel misconceptions that have been propagated by the creationists.

You can also consult a glossary that includes terms that are used in evolutionary biology. These terms include:

Adaptation: The tendency of heritable characteristics to become more suited to a particular environment. This is due to natural selection, which occurs when organisms that have better-adapted traits are more likely to survive and reproduce than those with less adapted traits.

Common ancestor (also called common ancestor) The most recent ancestor shared by two or more species. By analyzing 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 stored in sequences of nucleotides that are strung together to form long chains, called chromosomes. Mutations are the reason behind the creation of new genetic information within cells.

Coevolution: A relationship between two species in which evolutionary changes in one species are dependent on evolutionary changes in the other. Examples of coevolution include the interaction between predator and prey, or host and parasite.

Origins

Species (groups of individuals that can interbreed) change through natural changes in the traits of their offspring. These changes are caused by a variety that include natural selection, genetic drift, and mixing of genes. The development of new species can take thousands of years. Environmental conditions, such as changes in the climate or 에볼루션 바카라 무료체험 competition for food and habitat can slow or speed up the process.

The Evolution site tracks through time the evolution of different animal and plant groups, focusing on major transitions in each group's history. It also examines the evolution of humans, which is a topic of particular importance for students.

When Darwin wrote the Origin, only a handful of antediluvian human fossils had been discovered. The famous skullcap, with the bones associated with it were discovered in 1856 in the Little Feldhofer Grotto of Germany. It is now recognized as an early Homo neanderthalensis. Although the skullcap was not published until 1858, just one year after the first edition of the Origin was published, it's extremely unlikely that Darwin had seen or heard of it.

While the site is focused on biology, it also offers a lot of information about geology as well as paleontology. The most impressive features of the website are a series of timelines which show how geological and climatic conditions have changed over time as well as an interactive map of the geographical distribution of some fossil groups listed on the site.

While the site is a companion to a PBS television series, 에볼루션 바카라 에볼루션 무료 에볼루션체험 (visit the next post) it also stands on its own as a valuable source for teachers and students. The site is well-organized and offers easy links to the introductory information of Understanding Evolution (developed under the National Science Foundation's funding) and the more specialized features of the museum website. These hyperlinks make it easy to move from the cartoon-style Understanding Evolution pages into the more sophisticated realms of research science. Particularly there are links to John Endler's research with guppies that illustrate the importance of ecology in evolutionary theory.

Diversity

The evolution of life on Earth has led to a wide variety of plants, 에볼루션 룰렛 animals, and insects. Paleobiology is the study of these creatures in their geographical context and offers a number of advantages over modern observational and experimental methods for analyzing evolutionary processes. In addition to studying the processes and events that happen frequently or over a long period of time, paleobiology allows to analyze the diversity of kinds of organisms as well as their distribution throughout geological time.

The website is divided into a variety of paths to learning evolution, including "Evolution 101," which takes the viewer on a line through the nature of science and the evidence supporting the theory of evolution. The course also focuses on misconceptions about evolution, and the background of evolutionary thinking.

Each of the main sections of the Evolution website is equally well-designed, with materials that are suited to a variety of levels of curriculum and teaching methods. In addition to the general textual content, the site offers an extensive selection of interactive and multimedia resources, such as videos, animations and virtual laboratories. The content is organized in a nested, bread crumb-like fashion that helps with navigation and orientation within the large web site.

For instance, the page "Coral Reef Connections" provides a comprehensive overview of coral relationships and their interaction with other organisms. Then, it zooms in on a single clam that can communicate with its neighbors and react to changes in water conditions that take place at the reef level. This page, as well as the other multidisciplinary, multimedia, and interactive pages on the site, provide an excellent introduction to a broad range of topics in evolutionary biology. The information also includes an explanation of the role of natural selection and the concept of phylogenetic analysis, which is a key tool for understanding the evolution of changes.

Evolutionary Theory

For biology students the concept of evolution is a major thread that binds all the branches of the field. A rich collection of resources helps teachers teach about evolution across the life sciences.

One resource, the companion to PBS's television show Understanding Evolution is an excellent example of an Web page that provides depth as well as breadth in terms of its educational resources. The site offers a variety of interactive learning modules. It also has an "bread crumb structure" that helps students move away from the cartoon-like style of Understanding Evolution and onto elements on this site that are more closely linked to the fields of research science. An animation that introduces the concept of genetics, which links to a page highlighting John Endler's experiments with artificial selection using Guppies in native ponds in Trinidad.

Another useful resource is the Evolution Library on this Web site, which contains an extensive library of multimedia assets connected 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 short videos that are designed for classroom use. These can be viewed online or purchased as DVDs.

Evolutionary biology is a field of study that has many important questions, including the causes of evolution and the speed at which it happens. This is especially relevant to human evolution, which has made it difficult to reconcile the notion that the physical traits of humans derived from apes and religions that believe that humanity is unique among living things and has an exclusive place in the creation, with soul.

Additionally there are a variety of ways that evolution could occur, with natural selection being the most widely accepted theory. Scientists also study different types like mutation, genetic drift and sexual selection.

While many scientific fields of study have a conflict with the literal interpretations of religious texts, evolution biology has been a source of intense debate and resistance from religious fundamentalists. Certain religions have reconciled their beliefs with evolutionary biology, while others haven't.