Kami Export - Paris Rivers - Evolution Webquest 2018 McD.pdf - Name Date Period Evolution WebQuest Part A Flip through the University of Utah \u201cLearn

Kami Export - Paris Rivers - Evolution Webquest 2018...

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Unformatted text preview: Name ____________________________________________ Date ___________________ Period ______ Evolution WebQuest Part A: Flip through the University of Utah “Learn Genetics” Lab (Recipe for Evolution) to answer the following questions. ​ 1. ​What three things make up the “recipe” for Evolution? ● Variation from sexual reproduction ● Heritability ● Reproductive advantage a. Variation i. What are the two modes of ​genetic variation​ of organisms? Mutation 1. _________________________ a. How would a mutation increase genetic variation? (​THINK​ about it! it’s not in the video) It would increase because mutation makes new alleles and new alleles leads to different changes in genes and genotypes which cause genetic variation. Crossing over/Genetic Recombination 2. _________________________ a. b. How would genetic recombination increase genetic variation? The crossing over of two different people with different genes makes genetic variation more frequent in the offspring. b. Natural Selection i. What are three types of ​selection pressures​ that could act on and eliminate organisms with undesirable traits? 1. Stabilizing selection 2. Disruptive selection 3. Directional Selection ii. Describe​ what happens to the organisms with the most favorable traits? They pass on their traits easier and more to the next generation. iii. Summarize​ what is happening during natural selection (red/yellow slide). The species adapts to its environment, based on the environment changes around it. Example, giraffes grow longer necks because leaves on trees got taller. c. Time i. Explain the role of time in evolution Changes occur in a population over time, which results in evolution. 2​. In your own words, how do the 3 parts of the “ evolution recipe” work together to evolve species and increase biodiversity. They help increase biodiversity and allele variation and frequency in populations over time which are the main factors population. Part B:​ Learn about the basics of evolution at ​ 3​. What is evolution and what is it responsible for? Evolution is the process by which modern organisms have descended from ancient ancestors. It creates diversity in populations over time. 4​. [Click ‘next’] When does evolution take place? Evolution only occurs when there is a change in gene frequency within a population over time. genetic 5​. Only inherited ______________________ differences that can be passed on are acted upon by evolution. 6​. Compare the two examples of changes in beetle populations. Which of the two scenarios is an example of evolution? ​Defend your answer with an explanation​. Beetles of different color because, the brown beetles was a change in the population over time which resulted in evolution. 7​. [Click ‘next’] Identify and describe the four basic mechanisms for evolutionary change​ in your own words! Mechanism Mutation Migration Genetic drift Natural Selection Description A change in genes which can cause a variation in alleles. The moving of one gene from a population to another gene population. Different gene patterns in different generations. Adapting to the environment, inheriting genes and alleles to survive. variation genetic 8​. Genetic drift and natural selection only take place if there is ___________________ __________________. 9​. [Click next several times to read about mutations] Now complete the paragraph below regarding gene flow. migration individuals “Gene flow, also called _________________, is any movement of ______________ from one __________________ to another. Gene flow includes lots of different kinds of events, such population as _________________ being blown to a new destination or people moving to new cities or pollen gene versions countries. If ______________ are carried to a population where those genes previously did not flow gene __________________, ____________________ can be a very important source of genetic variation brown ___________________. In the graphic on the website, the gene for _________________ coloration moves from one population to another.” 10​. [Click next and read until you get to Genetic Drift] Summarize the idea behind genetic drift. Genetic drifts , drifts the genetic makeup of a population, but it is a random process unlike natural selection. 11​. [Click next] Natural selection is the most important mechanism behind evolution. This webpage gives you an example of natural selection involving beetles. Read the descriptions and look at the cartoons. ​Explain what has happened to this population of beetles, using the following terms​: ​Adaptation, Survive, Reproduce, Gene, Natural Selection, Species, and Evolution. The brown population of beetles evolve which become more common to allow the beetles to have more offspring. They had to make this happen because the green beetles were being eaten by the birds. For the species to survive they had to adapt. 12.​ How do the finches of the Galapagos Islands demonstrate evolution? They were all on different places on the islands, which meant they had to eat different foods. Which led to natural selection and adaptation , the different beaks were passed on to the offspring in the different areas of the islands which is evolution. 13​. [Click next] Fitness does not necessarily mean “strongest.” Defend this statement. It depends on the environment and pressure on the gene to move to relate to other genes. ...
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