Inquiry 11/17 and 11/18

Please pick up your lab book and be prepared for a new seat!

Lab Book Grading

1. Warm-Ups (out of 7)

2. Gifts from the Past (out of 10)• 6 drawings/descriptions of small fossils -3• 6 drawings/fossil and rock types- 3• Hillside drawing with fossils/ages- 2• Analysis question-2

Lab Book Grading

3. Darwin Article (out of 5)•All 5 questions answered CORRECTLY

4. Bean Lab (out of 12)•Purpose -1•Data table-2•Graph-3•Analysis questions-6

Lab Book Grading

5. Test Review (out of 12)All questions answered thoroughly- 10+ 2 points for organized lab book

WHAT IS THE #1 THING YOU CAN DO TO IMPROVE?

Evolution Unit Test

• Out of 36 (33 in grade book)A = 30-33B = 26.5-29.5C = 23.5-26D = 20-23

Scores of 23 and below can retake between now and Thanksgiving Break!

Class Average = 24.7 (75.1%)

Test Corrections

• Using your notes and table-mates, re-answer any questions you missed on notebook paper.

• HW: turn in your original test with corrections

• Note: you can’t take the gray test with you. Write down the info. you need

Unit 3: Genetics!How do you inherit genes?

How do your genes make you “you”?

Unit 3: Genetics• On one class paper: write what you already

know about genetics• On the other class paper: write what you want

to know

Every person must contribute something to each paper!

Yeast Lab- in your lab book

Investigative Question: 1.When we mate different yeast parents, which traits show up and why?Big Picture: How are traits passed from parents to offspring?

Background Knowledge

In your lab book:a.What are yeast? (don’t just say “fungus”)b.How do yeast mate? (use mating types and pheromones in your answer)c.How can yeast reproduce asexually?d.What strains of yeast are we using and what do they look like?

Yeast Lab Background Information

Yeast are Fungi.Yeast are single celled and eukaryotic.Yeast have mating types instead of sexes.Mating types are “a” and “alpha”.A deliberate mating is called a CROSS.There are many strains of yeast.

Strain 2 = pinkish red colored (both the a2 and alpha2)Strain 3 = cream colored (both a3 and alpha3

Yeast Lab Data

• Copy two mating grids neatly into your lab book.

• Predict (in the first grid) the colors of the babies that show up when you mate each set of parents

Alpha2(red)

Alpha3(cream)

a2(red)a3(cream)

First set of parents

Second set of parents

Materials

• Sharpie• Petri dish• Waste cup• Toothpicks• Class yeast- 4 plates (alpha 2, a2, alpha3, a3)

Yeast Lab Procedure

1. Neatly label petri dish along bottom edge with lab group names and date.

2. Neatly draw and label a mating grid on bottom of petri dish (see your data section!).

3. Wash hands.4. Streak parents by taking a TINY bit of each and

putting it on the plate along the top or side….PAY ATTENTION TO YOUR LABELING!!! (use a different toothpick for each mating type and strain..…a total of 4 toothpicks; be careful not to touch toothpick end or damage the agar).

5. Throw away these toothpicks.

Yeast Lab Procedure

6. Carry out the crosses (mate the yeast!!!) (use a new toothpick for each mating type and strain…a total of 8 toothpicks; be careful not to touch toothpick end or damage the agar)7. Throw away all toothpicks; wash your hands.8.Incubate at 30°C until next class… upside-down!!

Due Next Time

• Test Corrections!