12. Natural Selection – Day 3  Essential Question: How does genetic diversity allow or prevent a species ability to adapt to its environment?  Learning.

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Presentation transcript:

12. Natural Selection – Day 3  Essential Question: How does genetic diversity allow or prevent a species ability to adapt to its environment?  Learning Target: I can identify and describe the four components of Natural Selection.  Learning Task: I will identify the 4 components of Natural Selection. I will use “bean bugs” to illustrate the 4 components of Natural Selection.

Welcome! Warm Up Tuesday 4/22/14 Week of 4/21 – 4/25  What are the 4 components of Natural Selection?

4th Quarter Table of Contents 1 Title Assignment # Video: Evolution Questions Segment 1& 311 Evolution Vocab (7 Words)12 Evolution Notes: The Theory of Natural Selection 13 Video: Evolution Questions Segment 4&6 14 The Bean Bug Game15

Evolution Vocab p.12  Remember, your Evolution Vocab should be in your notebook and your Frayer Models are due on Thursday

Evolution Vocab 12 Darwin: a naturalist who proposed and provided scientific evidence that all species of life have evolved over time from common ancestors Natural Selection: survival of the fittest organisms that are the best adapted to their environment and will live long enough to reproduce and pass on those adaptations Theory: a explanation that ties together many hypothesis and observations Adaptation: a trait that increases the chances that an organism will survive and reproduce Biological evolution: the change over time of living organisms Extinction: The evolutionary termination of a species caused by the failure to reproduce and the death of all remaining members of the species Species: the most specific classification of living things

 Homework Due Today: Natural Selection Review  Let’s Review

The Bean Bug Game  Objective: To investigate how genetic diversity drives natural selection.  Background:  In this simulation, everyone in your group is a bird. The bowl of candy represents different kinds of “bean bugs” that you like to eat. You will see how natural selection affects the population of your prey-the “bean bugs.” 

The Bean Game  The game will last through several feeding seasons.

 What were the variations in our population of “bean bugs”?

The Bean Game  Data:  Graph the initial population of your bean bugs as a bar graph. Label your x and y axis.  Label the X-axis “Candy” and the Y- axis “Number of individual bugs.”  Answer the analysis questions

The Bean Game  Data:  Graph the initial population of your bean bugs as a line graph. Label your x and y axis.  Label the X-axis “Candy” and the Y- axis “Number of individual bugs.”  Answer the analysis questions

The Bean Bug Game  1.What were the variations in our population of “bean bugs”?  2. In order to survive, the “bean bugs” had to overcome a struggle. What was that struggle?  3. Did any of your bug species go extinct? Why or why not?  4. Which of your species ended up with the largest population? What adaptation allowed this species of bug to survive the best?  5.If you continued to do this experiment for 5 more rounds, how do you think your populations would have changed? Why?  6. Apply what you learned in this lab to real bugs. How do you think natural selection would affect a species of bug? Which bugs in a population would die out, and which genes would be selected to carry on to the next generation?

Exit Ticket  How does The Bean Bug Game demonstrate the Theory of Natural Selection?