Scribe! 1/25

Hey guys! So today in class we began with handing in our Double Bubble Maps on Darwin vs. Lamark. Then we discussed on how the Natural Selection Lab worked and how we were going to do it. *Just incase you guys didn't get the homework it is to finish the Natural Selection Lab, go see Mrs. Stein to get a homework pass if you haven't already, and that the Project on the endangered species is due February 28th.

So this lab is about natural selection and how it is about how organisms vary in their characteristics and how some organisms reproduce and survive better than others. The purpose of the lab is to reinforce the concept of how selection works in a demonstration. Here are the steps to this lab:

1. Work as a lab group of four

2. Spread the piece of fabric out on your lab table

3. Select two members of your group to act as predators

4. The two predators should turn away while the other group member distribute ten chips of each color randomly on the cloth.

5. After 100 chips(prey population) have been placed on the cloth, the predators begin attacking. Each of the two predators removes 40 chips, on at a time(take the first chip that catches your eye, do not just grab anything.) Predators should turn away from the cloth each time they take a chip, so as not to spot more than one chip at a time. TAKE ONLY THE FIRST CHIP YOU SEE!

6. The observers should count the prey as each of the predators removes 40 chips.

7. When 80 chips have been removed, collect the 20 remaining on the cloth.

8. Record the number of chips of each color that survived on the provided data table

9. Now allow the population of survivors to reproduce by adding four chips of the same color for every chip that remains from the original population.

10. Repeat the above procedure for the second and third generations and record your results pin the same data table. The same predators should be used throughout the exercise.

11. Answer the following questions on the data table

THE CHART OUR GROUP CAME UP WITH IS AT THE TOP OF THE PAGE!

The other picture is also at the top of the page

THE NEXT SCRIBE WILL BE KAITLYN!