FOCUS LESSONYOU ARE WORKING ON THE REAL WORLD EXAMPLE COLUMN12/04/13 OR 12/05/13

Have your I.D. out for me to check.

ESSENTIAL QUESTION

How does meiosis contribute to genetic diversity of organisms?

Daily Objectives: SWBAT compare and contrast different types

of haploid and diploid cells including gametes, somatic cells, and zygotes.

SWBAT explain why meiosis causes genetic variation as a result of crossing over, sorting, and recombining of genes

HOW WILL WE GET THERE?

Lab- page 22 DNA replication

Homework was due page 23 DNA replication

DNA replication activity Quiz #4- DNA replication Corrections/ Enrichment Meiosis notes- pg 27 Meiosis pictures- pg 26 Meiosis lab- pg 28 Home learning- pg 29

Last Class This Class

HOME LEARNING IS LEARNING!If your notebook is not complete through page 23 you’re behind!

Please catch it up!www.edwhitebiology.weebly.com

DNA REPLICATION ACTIVITY

Take the card you were given. If you need to review what that is please look

on pages 20 and 21 in your notebook.

We will now demonstrate the process of DNA replication.

ENGAGEMENT LEVEL SHOULD BE 100% Out of your seats please!

FIRST

Create nucleotides! As many as we can.

Remember a nucleotide is a phosphate, 5 carbon sugar, and a nitrogen base

Where are nucleotides located within the eukaryotic cell?

NEXT

Let’s make this strand of DNA:

C-A-G

What would the complementary strand be?Remember the rules of base

pairing!!!

NEXT

G- T- CThese nucleotides should be added.

We now have a double strand of DNA.

This is in the nucleus of your cells.

TIME TO REPLICATE THE DNA

When in the cell cycle does DNA replication occur?Synthesis of Interphase

What must happen first to our DNA double strand?It must be separated into two strands by the enzyme- Helicase

NEXT STEP- UNZIP THE GENES!

Helicase needs to break the bonds that hold the base pairs together.

What are those bonds?Hydrogen Bonds

RESULT

2 separated complementary strands

Which enzyme is now going to attach to each template strand to build more DNA?DNA polymerase

DNA POLYMERASE

You need to determine which nucleotides in the nucleus need to be added to each template/ strand.

Proofread your work!

WHAT ARE THE FINAL PRODUCTS?

Results?Two Identical Strands

Each containing half of the original and half new

Semi-conservative replication

QUIZ #4 DNA REPLICATION- PAGE 25

Clear your desks Volume level zero You will have 10 minutes

When you are done turn your quiz over and sit quietly.

LET’S GRADE!

Take a colored writing utensil out of your box.

Put a check if the answer is right and an X if the answer is wrong. If it is wrong please indicate the correct answer

for the student’s paper which you are grading.

CORRECTIONS OR ENRICHMENT PAGE 24

S Statement: What is

the correct answer? R

Reason: Why is that answer correct?

E Evidence: What

page in your notebook did you find the correct answer?

Use the following DNA segment: ATTCGG

Find the complementary strand.

Replicate the DNA. Diagram the end

products. Describe the

enzymes involved.

Corrections- 60% or below

Enrichment

LET’S PREDICT!THINK- PAIR- SHARE

Why aren’t ALL siblings with the same parents twins?

My brother and I look alike, but we are NOT twins even though we have the same parents.

Time to learn about MEIOSIS!

FOCUS LESSONYOU ARE WORKING ON THE DIAGRAM COLUMN- MAKE YOUR PICTURES NICE!12/06/13 OR 12/09/13

Have your I.D. out for me to check. Pick up your group’s box!

ESSENTIAL QUESTION

How does meiosis contribute to genetic diversity of organisms?

Daily Objectives: SWBAT compare and contrast different types

of haploid and diploid cells including gametes, somatic cells, and zygotes.

SWBAT explain why meiosis causes genetic variation as a result of crossing over, sorting, and recombining of genes

HOW WILL WE GET THERE?

DNA replication activity

Quiz #4- DNA replication

Corrections/ Enrichment

Meiosis notes- pg 27 Meiosis pictures- pg 26 Meiosis lab- pg 28 Independent practice

Meiosis- pg 29

Home learning: Complete IP Meiosis if not done in class.

Make sure NB is good to go!

Last Class This Class

NOTES ON PAGE 273 TYPES OF CELLS IN THE BODY-

Gametes- haploid sex cells (eggs, sperm)

Somatic cells- diploid body cells that make up most of your body (heart, liver).

Zygote- cell that forms when a male gamete fertilizes a female gamete.

Which type of cell listed above can not be found in males?

AT THE TOP OF PAGE 26 CREATE AND COMPLETE THIS CHART

Type of Cell: Synonym: How many sets of chromosomes

Example(s)

Gamete

Somatic Cell

Zygote

CHECK YOUR WORKType of Cell: Synonym: How many

sets of chromosomes

Example(s)

Gamete Sex Cell 1 set Egg, Sperm

Somatic Cell Body Cell 2 sets Heart, Liver, Kidney, Brain, Stomach, etc.

Zygote Fertilized Cell 2 sets NA

DEFINE ON PAGE 27 IN THE TOP MARGIN

Meiosis Needed for sexual reproduction

produces gametes (egg, sperm) which are haploid cells

NOTES SET UP- COPY THE HEADINGS DOWN AND LEAVE SPACE ON PAGE 27:

Interphase-Meiosis I-

Prophase I-Metaphase I-Anaphase I-Telophase I/Cytokinesis-

Meiosis II-Prophase II-Metaphase II-Anaphase II-Telophase II/Cytokinesis-

If you are out of room take out a blank

sheet of notebook paper to

create notes on.

COMPLETE YOUR NOTES-

Interphase: Preparing for cell division DNA Replicates during synthesis

Prophase I: Homologous Chromosomes pair up. Crossing over can occur.

Make them nice enough to study from!

Use color!

PLEASE CONTINUE…

Metaphase I: Homologous chromosomes pair up in middle (homo means same) That means TWO sets of Xs! One from your Mom

one from your Dad (both code for same trait) Anaphase I: Homologous chromosomes are

pulled APART (Dad’s chromosome goes to one side, Mom’s to

the other) Telophase I/ Cytokinesis: Cell membrane

starts to pinch creating 2 daughter cells genetically different!

ON PAGE 26- UNDER YOUR CHART

Diagram each phase of Meiosis I that you just took notes about.

Use color We’ll check your work in 5 minutes!

MEIOSIS I

Prophase I Metaphase I Anaphase I Telophase I and Cytokinesis

Interphase I

Meiosis I

MEIOSIS 2- LOOKS LIKE MITOSIS

Prophase II- chromosomes condense/ organize

Metaphse II- chromosomes line up in the middle of the cell

Anaphase II- sister chromatids are pulled apart

Telophase II/ Cytokineis- 4 unique haploid daughter cells/ gametes are formed

ON PAGE 26- UNDER YOUR CHART

Diagram each phase of Meiosis II that you just took notes about.

Use color We’ll check your work in 5 minutes!

MEIOSIS II: NOTICE ANYTHING??

Meiosis II

Telophase II and Cytokinesis

Prophase IIMetaphase II Anaphase IITelophase I and

Cytokinesis I

Meiosis II

HANDS ON PRACTICE. PAGE 28

Send the oldest person from your group to pick up the baggie with lab materials.

Use the yarn to create a cell membrane on your desk.

We are going to model meiosis! Have your notebook open to page 28.

You may want to take notes or create drawings.

Title page 28:

Meiosis Modeling with beads

WHAT WOULD YOUR CELL LOOK LIKE BEFORE INTERPHASE?

WHAT WOULD YOUR CELL LOOK LIKE AFTER INTERPHASE?

WHAT WOULD YOUR CELL LOOK LIKE DURING PROPHASE I? DID CROSSING OVER OCCUR?

VOCABULARY FOR PAGE 28

Crossing over:When homologous chromosomes

exchange genetic information during meiosis I (How can you show this with the beads?)

Homologous chromosomes:Chromosomes that have the same

genes (eye color), even if the alleles are different (brown, hazel, blue)

DRAW PICTURES!!!!!

WHAT WOULD YOUR CELL LOOK LIKE DURING METAPHASE I? WHERE WOULD THE CENTRIOLES BE?

WHAT WOULD YOUR CELL LOOK LIKE DURING ANAPHASE I? WHAT HAPPENED TO THE HOMOLOGOUS PAIRS?

WHAT WOULD YOUR CELL LOOK LIKE DURING TELOPHASE / CYTOKINESIS? WHAT HAPPENED TO THE CELL MEMBRANE?

ON PAGE 28 DRAW THE END PRODUCTS OF MEIOSIS 1.

Answer this question: 1. Are the two daughter cells haploid or

diploid? Explain.

YOU DO! HOW WOULD YOUR CELLS LOOK DURING MEIOSIS II?

You will move your chromosomes through the rest of the phases with your group.

Raise your hand if you have a question. Draw the final products on page 28. Answer the following questions:

2. Are the 4 daughter cells haploid or diploid? Explain.

3. How are your four daughter cells similar?

4. How are your four daughter cells different?

5. What did you make with this process?

Need help?

Textbook page174

- 175

TIME FOR INDEPENDENT PRACTICE

Meiosis practice hand out- page 29

Volume level 0Raise you hand if you have any

questions.

YOU CAN DO THIS!!!!

EXIT TICKET: POST IT STYLE

Pick one of the daily objectives and explain it in words that an elementary school student would understand.

SWBAT compare and contrast different types of haploid and diploid cells including gametes, somatic cells, and zygotes.

SWBAT explain why meiosis causes genetic variation as a result of crossing over, sorting, and recombining of genes