Conclusion This WebQuest was designed to help you locate evidence for evolution from different areas of science. Present this chart to the class. Fossils, along with the comparative anatomy of present-day organisms, constitute the morphological, or anatomical, record. This is very strong evidence for a common ancestor from which all life descended. And this is a very nice picture here of a dinosaur enjoying a sunset at the beach. Next lesson. Fossil Evidence of Evolution Directions: On the line before each label, write the letter of its correct location on the scale. Evidence for Evolution. Remember the effect of gene flow is to homogenize populations- make them more alike while natural selection tends to accentuate differences but not always- remember stabilizing selection mode. Every now and then, a “missing link” discovery claim is made, reinforcing this belief.2 The progression chain By far the most famous icon of evolution—seen everywhere from book covers to magazine articles to cartoons—is a drawing depicting part of this chain, namely human evolution from a primitive, stooping ape-like Thousands of human fossils enable researchers and students to study the changes that occurred in brain and body size, locomotion, diet, and other aspects regarding the way of life of early human species over the past 6 million years. By studying the basic biochemistry shared by many organisms, we can begin to piece together how biochemical systems evolved near the root of the tree of life. find evidence of them. The remarkable cases of resemblance e.g. Video transcript. Origins and biochemical evidence. The evolution of these genetic barriers to gene flow is the key to speciation – the elevation or evolution of new species. Evidence of evolution review. Natural Selection. Scientists have discovered a wealth of evidence concerning human evolution, and this evidence comes in many forms. The theory of evolution is supported by biochemical evidence; many of the same molecules and biochemical processes occur within all living organisms, from single-cell bacteria to humans. Branching Descent, and 2. Practice: Evidence of evolution. Today, the major pieces of evidence for this theory can be broken down into the fossil record, embryology, C. Evidences in favour of Darwinism: 1. •Evidence for evolution from microbiology •Basics of genetics •Ubiquitous proteins and DNA sequences •Evolution in the lab •Speciation in nature NOTE: many slides in the four evolution lectures obtained from Web sources: Ken Miller [“Hot Science, Cool Talks” at UT Austin], Elizabeth Saunders, Carl Wozniak, Caltech Bio 1 2. 2. The fossil record. . Evidence of Evolution-Answers in gray Background When Charles Darwin first proposed the idea that all new species descend from an ancestor, he performed an exhaustive amount of research to provide as much evidence as possible. Fossils provide solid evidence that organisms from the past are not the same as those found today; fossils show a progression of evolution. Originally, scientists couldn't understand how the process of evolution began, but they later discovered that RNA possesses catalytic properties. Phylogeny. There is a close parallelism between natural selection and artificial selection. Thus the two key concepts of Darwinian Theory of Evolution are: 1. If we were to rewind the clock back about 70 million years, you would see dinosaurs roaming the Earth. All cells on Earth, from our white blood cells, to simple bacteria, to cells in the leaves of trees, are capable of reading any piece of DNA from any life form on Earth. 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