PPT-Natural Selection Evolution: Teachable Tidbit

Context Introductory biology for science majors 2 full class periods and a followup exam question Learning Goal We want students to understand that natural selection is a phenomenon that applies to their lives. NJIT. Bhavani Balasubramanian. Maria Stanko. Ellen Wisner. Brandeis University. Melissa Kosinski-Collins. Jim Morris. Dan Perlman. © Dan Perlman Ecolibrary.org. Context:. Midway through a course in . Evolution. Believed to be 4.5 billion years old. Thought to have had a very anaerobic atmosphere. Earliest organisms were able to survive primitive environments. Prokaryotes that resemble today’s bacteria. How does natural selection change . a population?. P. 247-248 What are the five important principles of natural selection? . P. 250 . What are two sources of variation? . What is a niche? . P. 258 - 259. Evolution- changes in the characteristics of groups of organisms over time . Charles Darwin was the first to propose a feasible . mechanism. for evolution. It is called . natural selection. . . Evolution by Natural Selection is a theory. . The Importance of Evolution in Ecology. Ecologists study proximate or “how” questions:. How nutrients flow through ecosystems. Evolutionary biologists study ultimate or “why” questions:. Why does a stickleback fish have armor in one lake but not another?. OLAC 2012 . 19 October 2012. Eric Childress. Consulting Project Manager. OCLC Research. Big patterns. Media patterns. 50 years ago. Talk Map. Big Patterns. New companies blend:. retail/advertising. devices/OS. A mechanism for change in populations.. Any change in the . inherited . traits within a population across generations. Individuals better adapted to their environment tend to survive and . produce more offspring. Danielle Donahue. Aa. A. daptation: a well fitted feature that aids in the survival of a population. Example: the blind cave salamander has no use for eyes because they live in complete darkness. Bb. What is natural selection?. It’s the . process whereby organisms better adapted to their environment tend to survive and produce more offspring. . The . theory. of its action was first fully . explained . Unit:09. Lesson: 01. Be prepared to share your response to the following:. Biological evolution happens at the __________ level, not the individual organism level.. All three definitions mention genetic changes or changes in allele frequency within a population from one generation to the next.. Chapters 14-18. Charles . Darwin. , DOB 1809, . On the Origin of Species by Means of Natural Selection. , . HMS Beagle –. 1831-36. Greeks – life arose in water and more complex followed simpler ones. Gibson. Geoscience Research Institute. www.grisda.org. Summary. Evolution is the theory that all organisms have descended from a common ancestor by unguided (natural) processes.. The Cambrian Explosion contradicts the pattern . Define. . acids, bases . in . biosystems.  . Predict . charge of molecule @ particular pH based on its . pKa. Interpret. graph of the above . relationship. Calculate. ratio of protonated/. unprotonated. . 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.