14. Natural Selection – Day 4 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 can play a game to illustrate the 4 components of Natural Selection.

Welcome! Warm Up Thursday 4/24/14 Week of 4/21 – 4/25

What is missing from the phrase “survival of the fittest?”It’s not enough to

simply survive, the best adaptedorganisms must survive and reproduce to pass ontheir better-adapted DNA to the next generation!

4th Quarter Table of Contents 1

Title Assignment #

Video: Evolution Questions Segment 1& 3 11Evolution Vocab (7 Words) 12Evolution Notes: The Theory of Natural Selection 13Video: Evolution Questions Segment 4&6 14The Bean Bug Game 15

Open Notebook to Page 13Evolution Notes: The Theory of Natural Selection

Talk to your Table Partner about the missing questions in relationship to the Bean Game you played

I. Organisms face a struggle to survive

What does struggle to survive mean?

What was the struggle that the “bean bugs” faced in the game?

Life is a challenge & you must overcome those challenges to survive

Not to get eaten

II. Organisms tend to over produce

What is over production?

Why do animals over produce?

Leaving more than enough offspring to replace yourself

-Some offspring will not live to reproduce-The more offspring you have, the more likely some will survive

III. Organisms show variation among offspring

What were the variations that we saw in the bean game?

What is variation?

What causes variation?

Genetic differences in a population of living things

Mutations in DNA or Reproduction

Color and Flavor

IV. Organisms with the variation that is best adapted to their environment survive & reproduce

Give an example of the best variation from the bean game?

Why was it the best?

ANSWER:

ANSWER:

Review Bean GameCopy on to NB 15

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?

Natural Selection Quiz

http:/goo.gl/tkY96

Video: Evolution Segment 4 & 6 14Segment 6:Why Does Evolution Matter Now?

1. What is an example of evolution occurring today?

2. What is the leading infectious disease among adults? What causes it?

3. What is multi-drug resistant tuberculosis?

4. What happens if a patient does not take all of their medication?

5. Why is a tuberculosis epidemic in Russia dangerous to us (why should we care)?

Segment 6:Why Does Evolution Matter Now?

Full screen/youtube:http://www.youtube.com/watch?v=6jBD8xfbf4YOriginal PBS location:http://www.pbs.org/wgbh/evolution/library/11/2/e_s_6.html