Time Required: Varies, depends on how much students do on their own, how much discussion you want to have, how complicated the example was. I even have students read current event articles on evolution and have them fill out the chart. Basically, just make a stockpile of copies and whenever students encounter a new organism, have them complete the chart. I use the VIDA chart with the lesson on African Elephant Tusks, Rock Pocket Mice, Stickleback Fish, and Human Evolution examples. Adaptation means that over time, the frequency of birds with that particular beak increases. The process of natural selection favors people that have particular characteristics that allow them to be more suited to the environment in which they live. Differential survival and reproduction means that some birds were better able to survive if their beaks were the best tool for the food on the island. Inheritance means that this trait is something that can be inherited or that it is genetic. For example, if you start with the finches of the Galapagos, Variation refers to birds having different sized beaks. Rock pocket mice - adaptive melanism Hypothesis As your hypothesis, either propose a hypothesis that addresses natural selection occurring in either dark or light rock environments specifically or state the Hardy-Weinberg equilibrium. These principles apply not matter what organism you are studying. Biology questions and answers Typerverlere Experiment C. VIDA means: Variation, Inheritance, Differential Survival and Reproduction, Adaptation. I use this chart multiple times throughout the unit, basically for each model organism we study. (Once you’re on the page, look for a clickable link reading Watch Natural Selection and Adaptation beside the picture of the cute little mousie. Depending on environmental conditions, inherited characteristics may be advantageous, neutral, or detrimental.This chart is used as a graphic organizer to help students understand the process of evolution by natural selection. on rock pocket mice in the desert southwest of the United States.Traits that confer an advantage may persist in the population and are called adaptations.Over time, the proportion of individuals with advantageous traits may increase (and the proportion with disadvantageous traits may decrease) due to their chances of surviving and reproducing.Inherited characteristics affect the likelihood of an organism's survival and reproduction.New heritable traits can result from mutations.Evolution results from genetic drift acting upon genetic variation within a population. The rock pocket mouse is a living example of Darwin’s process of natural selection.Evolution results from natural selection acting upon genetic variation within a population.Not only is evolution happening right now everywhere around us, but adaptive changes can occur in a population with remarkable speed. Evolution occurs through multiple mechanisms. The rock pocket mouse is a living example of Darwin’s process of natural selection.Not all similar traits are homologous some are the result of convergent evolution.There is a fit between organisms and their environments, though not always a perfect fit.An organism's features reflect its evolutionary history.Students compare sequences to identify coat color mutation. Information on controversies in the public arena relating to evolution Students transcribe and translate portions of the wild-type and mutant rock pocket mouse.Alignment with the Next Generation Science Standards.The big issues – Pacing, diversity, complexity, and trends.Macroevolution – Evolution above the species level Use the data and what you have learned about evolution to explain how mutation is a random process, but natural selection is not random.Microevolution – Evolution within a population This activity provides an introduction to natural selection and the role of genetic variation by asking students to analyze illustrations of rock pocket. 6 out of 5 Mouse over image above to zoom any area, or click on image to zoom the entire image.Say we know that the mutation would be common to all members of the population in 500 years. Classification and Heteromyidae phylogeny are shown below. Even though it looks very much like a mouse, pocket mice are more closely related to pocket gophers than to true mice. This population lives on black colored rocks that become covered in white wind blown sand. The rock pocket mouse (Chaetodipus intermedius) is a small rodent in the Heteromyidae family. Mechanisms: the processes of evolution – Selection, mutation, migration, and more T or F: Natural selection is random False Consider a population of mice that is mostly black with a genetic mutation that causes a few to be white.The history of life: looking at the patterns – Change over time and shared ancestors.An introduction to evolution: what is evolution and how does it work?.
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