PPT-Evolution Theory

P 104 EQ What is evolution and what types of evidence are there What is evolution Evolution is gradual change of heritable traits determined by an organisms alleles in a population across generations eventually generating new species over time. Scientific Theory. Social use of the word “theory”. Not the same as in science. Implies a hunch or a casual guess. Scientific Theory. 1. Highly probable explanation based on vast collections of scientific data. Unit 6: Seventh Grade. Theory vs. Law. An idea that has . not. been proven to be unequivocally true. Examples:. Big Bang. The extinction of the dinosaurs. An idea or truth that . has . been proven to be unequivocally true. Which one?. There are 3 great universal questions. 1) Where did I come from?. 2) Why am I here?. 3) Where am I going?. The answer to the last 2 questions are dependent upon the answer to the first question. . The theory of evolution is supported by evidence from . the fossil record. comparative anatomy. comparative embryology. biogeography. molecular biology. and observed evolutionary change. . Trends in hominid evolution from early ancestors to. Texas Horned Lizard. Defense Behavior Adaptations. Its horns are extensions of its cranium and contain true bone.. When threatened it will puff up its body to cause its spiny scales to protrude, which makes it hard to swallow.. (Hons), Zoology. Panjab University, Chandigarh. ORIGIN OF UNIVERSE. BIG BANG THEORY. Thermonuclear explosion. Origin of universe occurred 20 . bya. .. ORIGIN OF EARTH. NEBULAR HYPOTHESIS. Condensation of gases under Gravitational force. Chapter 17: Processes of Evolution. Early Beliefs. 19. th. century: discovered species shared many traits, but lived in different parts of the world. Problematic – species only looked similar on the outside, but inside were very different . Science. Comparison with blood chemical (‘B’) between humans and other vertebrates.. humans. -. chimpanzee. 0. chicken. 11. Rhesus monkey. 1. frog. 17. mouse. 8. lamprey. 29. Challenge answer. What organisms are most closely related to us? . Evolution. – when a species of plants or animals adapts to their environment in order to survive over a long period of time. Key points!. Species. Plants or Animals. Adaptations. In order to survive. wallace. and was explained in book “ on the origin of species by means of Natural Selection . . Darwin put the theory based on his observations as he travelled round the world on the ship Beagle.. Evolution 9/11. Obj. TSW learn form mistakes made on the quiz, and take notes about evolution after the Environmental Science Current Events. P. 34NB. Make a food chain for the following organisms showing the energy arrows and the . . The process by which organism change over time. Based on science, not opinion.. Darwin. :. Evolution is descent with modification. Evolution. :. changes through time. Species accumulate difference. - I can demonstrate understanding of how the Theory of Evolution was formed. - . I can explain the terms adaptation, evolution and natural selection.. Who is this person?. Why are they on a £10 note?. . The process by which organism change over time. Based on science, not opinion.. Darwin. :. Evolution is descent with modification. Evolution. :. changes through time. Species accumulate difference.