big idea 1: evolution
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Big Idea 1: Evolution. Essential Questions. What role does evolution play in the organization of living things? What evidence supports our current models of the origin of life? How does the process of evolution drive diversity and the unity of life? - PowerPoint PPT PresentationTRANSCRIPT
Big Idea 1: Evolution
Essential QuestionsWhat role does evolution play in the
organization of living things?
What evidence supports our current models of the origin of life?
How does the process of evolution drive diversity and the unity of life?
How does life evolve in changing environments?
Learning Objectives Convert a data set from a table of numbers that reflect a
change in the genetic makeup of a population over time and apply mathematical methods and conceptual understandings to investigate the causes and effects of this change
Evaluate evidence provided by data to qualitatively and quantitatively investigate the role of natural selection in evolution
Analyze data to support the claim that responses to information and communication of information affect natural selection
Apply mathematical methods to data from a real or simulated population to predict what will happen to the population in the future
Learning ObjectivesEvaluate data-based evidence that describes
evolutionary changes in the genetic makeup of a population over time
Evaluate evidence provided by data from many scientific disciplines that support biological evolution
Refine evidence based on data from many scientific disciplines that support biological evolution
Design a plan to answer scientific questions regarding how organisms have changed over time using information from morphology, biochemistry, and geology
Evaluate given data sets that illustrate evolution as an ongoing process
Learning ObjectivesConnect scientific evidence from many scientific
disciplines to support the modern concept of evolution
Construct and/or justify mathematical models, diagrams, or simulations that represent processes of biological evolution
Pose scientific questions about a group of organisms whose relatedness is described by a phylogenic tree in order to (1) identify shared characteristics, (2) make inferences about evolutionary history of the group, and (3) identify character data that could extend or improve the phylogenic tree
Learning ObjectivesConstruct explanations based on scientific evidence that
homeostatic mechanisms reflect continuity due to common ancestry and/or divergence due to adaptation in different environments
Analyze data related to questions of speciation and extinction throughout Earth’s history
Justify the selection of data that addresses questions related to reproductive isolation and speciation
Describe speciation in an isolated population and connect it to a change in gene frequency, change in environment, natural selection, and/or genetic drift
Describe a model that represents evolution within a population
Day 1Watch the video “What Darwin Never Knew”
Write down questions/interesting points you have as you watch
Day 2 (60 minutes)Required readings:
Chapter 22, 23
Bozeman videos:There are 19 videos in the “Evolution” tab on
www.bozemanscience.com that you should watch throughout this unit
Activity 1Finish watching “What Darwin Never Knew”
Activity 2Use the website
http://evolution.berkeley.edu/evolibrary/article/evo_01 (you can Google “Welcome to evolution 101”) to create a word map that organizes and connects evolutionary terms and concepts
Words to include (but are not limited to): adaptation, environment, natural selection, genetic variation, speciation, mutation, species, population
This will be useful to come back to throughout the unit
Time: 30 minutes
Day 3Natural Selection
Artificial Selection
Activity 1 – Natural Selection
Work with a partner to complete the allele frequency lab
Complete the table on the handout
Complete the discussion questions on the back of the handout
Create another scenario with a different animal that has 2 different variations for a trait. What conditions would favour one trait over another?
Time: 45 minutes
Activity 2 – Artificial Selection
Describe the features or abilities of dogs for which humans might breed
Look at the “dog breeding example” – what traits match the example given? What other traits are important to consider? What traits are not important to consider?
You will be artificially selecting a new dog with certain traits by crossing 2 already existing dogs
Fill in the “ownership card” and “puppy traits” sheet
Each breeding pair will produce 3 puppies, and traits can be inherited from either the mother of father (use a coin to determine which traits are inherited)
Discuss the variation observed in the puppies
Display your findings in a picture
Day 4Required Readings:
Investigation #2Chapter 23
Bozeman: Investigation #2Hardy-Weinberg equilibrium
Activity 1Work through the sample model on excel
Create your own investigation:What trait are you going to look at?How many generations will you complete?What allele frequencies will you use?Complete a CERR write up for this investigation
CERR Write Up for Investigation #2
Claim – What is Hardy-Weinberg equilibrium and the principles behind it? What are some facts behind the trait that you have decided to
investigate? What is the % of it occurring in the real world?
Evidence – Calculations, graph, tables from your investigation
Reasoning – Why are you seeing what you do in your results? How do the allele frequencies change over generations? Why might this be? Why do recessive traits stay in a population? Relate back to Hardy-Weinberg
Rebuttal – Why don’t recessive traits disappear completely? Why did a trait that had a low allele frequency not become a
high frequency in the population? Relate back to Hardy-Weinberg
Day 5 Required Readings:
Chapter 22
Activity 1Read the excerpt of the article “Evolution of the Eye”
http://www.scientificamerican.com/article.cfm?id=evolution-of-the-eye
Support or refute the idea that the eye has changed due to natural selection Provide 3 ideas to support your opinion
Provide an example of an animal that has changed over time by the process of natural selection How has it changed specifically?
Propose a plan with scientific questions to test the theory of natural selection
Due – January 25
Time: 30 minutes
Activity 2 – LibraryUse Berkley’s Understanding Evolution (Google
“Evolution 101, we have used this site before) to explore the patterns in the diversity of life across the planet Earth
Connect evidence to help explain why organisms change over time
Interpret/analyze/manipulate the data presented to infer how evolution has affected different species
Time: 20 minutes
Activity 3 - LibraryRead the following articles:
http://news.nationalgeographic.com/news/2006/07/060714-evolution.html
http://www.time.com/time/health/article/0,8599,1931757,00.html
Write an essay that explains how modern concepts of evolution are supported through natural selection
Due: January 25
Day 6 (60 min)Required readings:
http://www.sciencedaily.com/articles/a/antibiotic_resistance.htm
http://www.answersingenesis.org/articles/am/v2/n3/antibiotic-resistance-of-bacteria
Activity 1After reading the articles on the evolution of
drug-resistant bacteria, explain the following:How does the misuse of antibiotics affect the
evolution of disease-causing bacteria?Why should we care about a resistant strain of
bacteria?What are 5 common diseases caused by bacteria,
and what would it mean if they became resistant to the antibiotic that treated it?
Time: 30 minutes
Activity 2Quiz
When you finish, you can work on either of the 2 assignments due on Friday
Day 11 (60 min)