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Evolution Site - Teaching About Evolution

Despite the best efforts by biology educators, misconceptions persist about evolution. Pop science nonsense has led people to believe that biologists aren't believers in evolution.

This rich Web site, which is a complement to the PBS program that provides teachers with resources that promote evolution education, while avoiding the kinds of misconceptions that make it difficult to understand. It's laid out in a "bread crumb" format to make navigation and orientation easier.

Definitions

It's not easy to effectively teach evolution. It is often misunderstood even by non-scientists, and even scientists use definitions that confuse the issue. This is particularly true when it comes to discussions on the meaning of the word itself.

It is therefore essential to define the terms used in evolutionary biology. The website for the PBS show, Understanding Evolution, does this in a clear and helpful manner. The site is a companion site to the show which first aired in 2001, but is also an independent resource. The material is presented in an organized manner that makes it simpler to navigate and understand.

The site defines terms like common ancestor, gradual process, and adaptation. These terms help define the nature and significance of evolution to other concepts in science. The site gives a comprehensive overview of the manner the concept of evolution has been tested. This information can be used to dispel misconceptions that have been engendered by the creationists.

You can also access a glossary that contains terms used in evolutionary biology. These terms include:

Adaptation is the process of changing heritable traits to become more suited to the environment. This is due to natural selection. It occurs when organisms with better adapted characteristics are more likely to survive and reproduce than those with less adapted traits.

Common ancestor (also known as common ancestor): The most recent ancestral ancestor shared by two or more species. The common ancestor can be identified by analyzing the DNA of the species.

Deoxyribonucleic Acid: A huge biological molecular containing the necessary information for cell replication. The information is stored in nucleotide sequences, which are strung into long chains called chromosomes. Mutations are the source of new genetic information in cells.

Coevolution is a relationship between two species where evolutionary changes in one species are dependent on evolutionary changes in the other. Coevolution is evident in the interactions between predator and prey, or parasite and hosts.

Origins

Species (groups which can interbreed) develop by a series of natural variations in the traits of their offspring. The changes can be caused by a variety of factors that include natural selection, 바카라 에볼루션 genetic drift and gene pool mixing. The development of a new species may take thousands of years, and the process can be slowed or increased by environmental factors like climate change or the competition for food or habitat.

The Evolution site follows the evolution of different groups of animals and plants and focuses on major changes within each group's past. It also explores the human evolutionary roots, a topic that is crucial for students to know.

When Darwin wrote the Origin in 1859, only a handful of antediluvian human fossils had been discovered. The most famous among them was the skullcap and bones that were discovered 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, one year after the first edition of the Origin was published, it is very unlikely that Darwin had seen or 에볼루션 바카라 heard of it.

While the site focuses on biology, it also includes a good deal of information on geology and paleontology. Among the best features on the site are a timeline of events that illustrate how climatic and geological conditions have changed over time, and an interactive map of the distribution of a few of the fossil groups featured on the site.

The site is a companion to a PBS TV series but it can be used as a resource by teachers and students. The site is very well-organized and has clear links between the introduction material in Understanding Evolution (developed with support from the National Science Foundation) and the more sophisticated elements of the museum Web site. These hyperlinks facilitate the move from the cartoon-like style of the Understanding Evolution pages to the more sophisticated world of research science. In particular there are links to John Endler's research with guppies that illustrate the importance of ecology in evolutionary theory.

Diversity

The evolution of life has led to an array of animals, plants and insects. Paleobiology is the study of these creatures within their geographical context and offers many advantages over the modern observational and research methods for analyzing evolutionary processes. Paleobiology is able to study not just the processes and events that occur regularly or over time but also the relative abundance and distribution of different groups of animals in space over the course of the geological time.

The site is divided into various pathways to understanding evolution that include "Evolution 101," which takes the viewer on a line through the nature of science and the evidence to support the theory of evolution. The course also focuses on common misconceptions about evolution as well as the evolution theory's history.

Each of the other sections of the Evolution site is similarly developed, with materials that can be used to support a range of curriculum levels and pedagogical styles. The site offers a wide array of multimedia and interactive resources which include animations, 바카라 에볼루션 video clips and virtual labs, in addition to its general textual content. The content is organized in a nested, bread crumb style that facilitates navigation and 에볼루션 바카라 무료체험 orientation on the Web site.

The page "Coral Reef Connections" For instance, the page "Coral Reef Connections" provides a comprehensive overview of the coral's relationships and interactions with other organisms, and then zooms in to one clam that can communicate with its neighbours and respond to changes in conditions of the water that occur at the reef level. This page, along with the other multidisciplinary, multimedia and interactive pages on the site, provide an excellent introduction to a broad range of topics in evolutionary biology. The content includes an explanation of the significance of natural selectivity and the concept phylogenetics analysis, 에볼루션 무료 바카라 an important tool to understand evolutionary change.

Evolutionary Theory

Evolution is an underlying thread that connects all branches of biology. A vast collection of books helps in teaching evolution across the disciplines of life sciences.

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

Another resource that is worth mentioning is the Evolution Library on this Web website, which includes an extensive multimedia library of resources that are related to evolution. The content is organized in curriculum-based pathways that correspond to the learning objectives set out in the biology standards. It includes seven short videos that are intended for use in the classroom. They can be viewed online or purchased as DVDs.

Many important questions remain at the core of evolutionary biology, including what triggers evolution and how fast it happens. This is especially true for humans' evolution where it was a challenge to reconcile religious beliefs that held that humanity has a unique place in the creation and a soul with the notion that human beings have innate physical traits originated from the apes.

In addition there are a myriad of ways that evolution can be triggered with natural selection being the most widely accepted theory. Scientists also study different types like mutation, genetic drift and sexual selection.

Although many scientific fields of study conflict with literal interpretations in religious texts, the concept of evolution biology has been a subject of intense debate and resistance from religious fundamentalists. While some religions have been able to reconcile their beliefs with the ideas of evolution, other religions haven't.