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Evidence for evolution SC.912.L.15.1 Explain how the scientific theory of evolution is supported by the fossil record, comparative anatomy, comparative.

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Presentation on theme: "Evidence for evolution SC.912.L.15.1 Explain how the scientific theory of evolution is supported by the fossil record, comparative anatomy, comparative."— Presentation transcript:

1 Evidence for evolution SC.912.L.15.1 Explain how the scientific theory of evolution is supported by the fossil record, comparative anatomy, comparative embryology, biogeography, molecular biology, and observed evolutionary change. Source:http://nondiscovery.wordpress.com/2008/09/11/intelligent-design-lacks- evolutions-web-of-evidence /

2 What do I need to know?  how the theory of evolution is supported by evidence from the fossil record, comparative anatomy, comparative embryology, biogeography, molecular biology, and observed evolutionary change. evidence  trends in hominid evolution from early ancestors to modern humans including brain size, jaw size, language and manufacture of tools.hominid evolution  the differences between a scientific theory and a scientific law and know how a theory is developed over time. scientific theory scientific law

3 Evidence for evolution Major types of evidence used to support the theory of evolution include the fossil record, comparative anatomy, comparative embryology, molecular biology & biogeography

4 Hominid evolution Over the last 7 million years several species of hominids have existed. Major changes seen in hominid evolution have included increase in cranium and brain size, standing upright (bipedal), the use of tools and development of language.

5 Theory vs Law A scientific theory is a well tested explanation for a phenomenon. Theories can be refined or discarded as new evidence is discovered. A scientific law is a description of an event and will always hold true under a certain set of circumstances or conditions.

6 Show What You Know  The diagrams below show the skeletons of two different animal species. How does comparing the skeletons of these animals provide support for the scientific theory of evolution? A. It provides information about the organisms' habitats. B. It shows possible common ancestry between organisms. C. It provides information to determine the organisms' ages. D. It shows possible chromosomal similarities between organisms.

7 Show What You Know  Which of the following correctly describes the general trend in hominid evolution? A. larger body size, broad forehead, smaller brains B. increase in brain capacity, bipedalism, use of tools C. thickening of the skull, protruding teeth, organized hunting D. large canine teeth, small skulls, diet of coarse plant material

8 Show What You Know  Humans and chimpanzees have almost identical DNA and many similarities in anatomy. Which statement about the evolutionary relationship between modern humans and chimpanzees is supported by these facts? A. Humans and chimpanzees are unrelated. B. Humans descended directly from chimpanzees. C. Humans are a more evolved version of chimpanzees. D. Humans and chimpanzees share a common ancestor.

9 Show What You Know  Which of the following statements correctly compares a scientific theory and a scientific law? A. A law is a fact and a theory is an opinion. B. A law is a theory that has been proven to be true. C. A law is a description and a theory is an explanation. D. A law is always true and a theory is sometimes true.


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