PPT-Evolution review Evidence for Evolution

What do we use in order to determine evolutionary relationships Fossil Record Anatomical Evidence Molecular Evidence Embryological Evidence Evidence for Evolution Fossil Record Evidence for Evolution. Variation in Living Things. SPECIES  - Group of organisms that interbreed. VARIATION - small differences between individuals of a species  . Some neither helpful nor harmful  . Some enable organism to be better suited to its environment.. EQ: What evidence convinced Darwin that species could change over time?. TEK 7ACDE. (. Supported . by 5 branches of . science. ). Evidence of Evolution. The Fossil Record (Paleontology). Geographic Distribution of Living Things (Geography). Evidence for Evolution. What is Evolution??. Change in the genetic composition of a population during successive generations, as a result of natural selection acting on the genetic variation among individuals, and resulting in the development of new species.. Highlights of what you need to remember:. LEQ: What experiments led to the development of the scientific explanation for the origin of life? . LEQ: How can we use endosymbiosis to support the theory of the origin of eukaryotic cells. . There is overwhelming evidence for the evolution of life on Earth. . Evolution in summary. Evolution occurs when heritable characteristics of a species change. . Evolution at its most fundamental level simply describes a . Evidence of Evolution. Essential Questions. What is the anatomical evidence of evolution?. How are fossils used as evidence of evolution?. What evolutionary evidence do we have from the field comparative embryology?. Organism DNA. 1a. Some of the strongest evidence for evolutionary relationships comes from studying the DNA of different organisms.. 1b. The fact that all organisms use the same DNA molecule to code for genetic information suggests that these organisms share a distant ancestor.. LAMARCK (1744 – 1829) . He proposed . 3 theories. to explain how species change…. Theory of Need. Theory of Use and Disuse. The Theory that Acquired Traits Can Be Passed on to Offspring.. August Weismann (1834-1914). 30 Minute Inquiry Activity. Research one of the following types of Evolutionary Evidence:. Fossil . Record. Vestigial . Structures. Homologous . Structures. Comparative . DNA. Note . the following about your type of evidence:. Evidence from around the world, experimentation, geology, fossils, discussion with other scientists (Alfred Wallace) lead to:. Theory of evolution . (Biology only). Charles. Darwin ‘On the Origin of the Species’ (1859). Evidence. Evidence. . of . common ancestry . among species comes from many sources.. . 2. FIVE PIECES OF EVIDENCE FOR EVOLUTION. G – Geographical . distribution . F – Fossil . evidence (remains of ancient organisms). Ch. 21 . Genes within Populations. #. 2 5 . Mechanisms . of evolutionary change. 1. Natural . selection. traits that improve survival . or reproduction will accumulate . in the population. adaptive . Early scientists proposed ideas about evolution. . Evolution is the biological change process by which descendants come to differ from their ancestors.. A species is a group of organisms that can reproduce and have fertile offspring.. 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 .