TODAY
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Bell Ringer
Review homework
Viewer
Assignment
Bell Ringer
 What are the four stages of mitosis?

Viewer Assignment
NOTE: Insert the slide with arrow first
 Complete the entire worksheet today
 Draw all stages for both plant and animal mitosis
 Label: nuclear envelope, chromosomes and cell membrane or wall + describe the stages of the animal mitosis
 Complete page 142 1-4 on the back of the blue sheet
 When you finish, be sure to complete any missing work and put the slide back in the correct sleeve

TODAY
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Get clickers
Bell Ringer
Pretest
Video
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Bell Ringer
Put the following stages of cell
division in order: cytokinesis, mitosis, interphase
Pygmy Tarsier
Remediation for the DNA summative will begin Tomorrow at lunch
There will only be 3 summative's this quarter, meaning each one will weigh more

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Bell ringer
Cell cycle notes
Worksheet
 What types of cell divide during mitosis? meiosis?

How many new cells do we make every day?
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2 trillion
Approximately 25 million per second
Every 15 years your entire body is replaced

Terms - recap
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Gametes
 An organisms reproductive cells (sperm and egg cells)
Somatic Cell
 Any cell other than sperm and egg cells

Prokaryotic Cell Reproduction
 Binary fission
 Exact copies of DNA transferred
 Cell elongates, DNA replicates, cell splits

Cell Cycle
 A repeating sequence of cellular growth and division during the life of an organism

Cell Cycle
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Interphase
 Most of the cells life
 The first 3 phases of the cell cycle
 Cell elongates
 DNA replicates
Mitosis
 Nucleus divides in 2
 Cytokinesis
 The cytoplasm divides

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If a gene is mutated, the protein may not function correctly
This can result in uncontrolled growth of cells

Eukaryotic Cell Reproduction
 Homologous chromosomes
 2 identical chromosomes
 46 chromosomes in human cells (2 sets of 23)
 1 set from father, one set from mother

Eukaryotic Cell Reproduction
 Diploid
 When a cell has two sets of chromosomes
 Somatic cells
 Haploid
 When a cell has one set of chromosomes
 Gametes (egg and sperm cells)

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Somatic cells
 All cells but reproductive cells
 Diploid
 Homologous chromosomes
 Replication through mitosis
Gametes
 Reproductive cells
 Haploid
 Replication through meiosis

Eukaryotic Cell Reproduction
 Gene
 Small segment of DNA that codes for proteins
 Chromosome (has thousands of genes)
 The DNA and proteins associated with the DNA
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Chromatids
 The 2 exact copies of DNA that make up each chromosome
Centromere
 The point where the 2 chromatids are attached

A
C
D
B

Prokaryotes
Binary Fission
Eukaryotes
Gametes Somatic Cells
(Haploid) (Diploid)
Meiosis Mitosis

Today
 Complete workbook 73-76 answer all questions

TODAY
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Bell Ringer
Turn in worksheet
Cell division PPT
Assignment
Bell Ringer
1. What stage of the cell cycle does a cell spend most of its time in?
2. What types of cells are diploid
3. What are the stages of mitosis

Mitosis - Terms
 Centrosome
 Releases spindles and winds them up
 Spindles
 move chromosomes during cell division

Mitosis – STEP 1
 Prophase
 Chromosomes coil up
 Nuclear envelope dissolves
 Spindle form from centrosome

Mitosis – STEP 2
 Metaphase
 Chromosomes move to the center and line up
 Spindle fibers link to chromatids

Mitosis – STEP 3
 Anaphase
 The chromosomes separate due to the spindle fibers

Mitosis – STEP 4
 Telophase
 A nuclear envelope forms around the chromosomes
 Chromosomes uncoil

Cytokinesis
 Starts when mitosis ends
 Animal Cells
 The cytoplasm in the cell is split in half forming 2 separate cells

Cytokinesis
 Plant Cells
 Because of cell wall, a cell plate is formed in the middle which makes the new wall

 Complete mitosis packet
 Use your notes and 5.2 (Page 138) in your book if needed

TODAY
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Bell Ringer
Meiosis notes
Short video
Assignment
5 days of office hours left
For remediation and
Retaking the first summative
Dead Leaf
Bell Ringer
1. What are the 3 stages of the cell cycle?

Put in the correct order
1
2
4
3

1
2
Mitosis
3
4

Eukaryotic Cell Reproduction
 Zygote
 The fusion of 2 haploid gametes (egg and sperm)
 Fertilization

Eukaryotic Cell Reproduction
 Autosomes
 Chromosomes that are not involved in determining the gender
 Sex chromosomes
 Chromosome that contain genes that determine gender

Eukaryotic Cell Reproduction
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Male XY chromosome
Female XX chromosome
Who determines the gender of the child?

Eukaryotic Cell Reproduction
 Karyotype
 A photo of all chromosomes for an individual
 Helps determine possible genetic disorders

 Chapter 6.1 (page 90-92)
 Also make sure you have completed
5.1.5.2 and 5.3 (page 74-81 )

TODAY
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Bell Ringer
Meiosis notes
Assignment
Bell Ringer
 What is the name of the process when a zygote forms?
4 days of office hours left
For remediation and
Retaking the first summative

Meiosis
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Provides genetic variation
Cell division for gametes
Produces 4 cells (mitosis 2)
Involves 2 divisions of the nucleus
 Meiosis I and Meiosis II

How Unique Are You?
 Number of possible genetically different siblings
 Between 2 people
 Approximately 8.5 million genetically different sperm cells
 And 8.5 million different eggs cells
 8.5mill x 8.5mill
 About 70 trillion
Another words, there was a 1 and 70 trillion chance you will be you just based on your parents

Meiosis – STEP 1
 Prophase I
 Crossing-over
 When portion of chromatids are exchanged
 Provides genetic variation

Meiosis – STEP 2
 Metaphase I
 Chromosomes move to the center and line up
 Spindles attach

Meiosis – STEP 3
 Anaphase I
 Homologous chromosomes move to opposite ends of the pole
 Because of spindles

Meiosis – STEP 4
 Telophase I
 Cytokinesis occurs

Meiosis II – STEP 5
 Prophase II
 A new spindle forms around chromosomes

Meiosis II – STEP 6
 Metaphase II
 Chromosomes move to the center and line up

Meiosis II – STEP 7
 Anaphase II
 The chromosomes move to opposite poles of the cell

Meiosis II – STEP 8
 Telophase II
 Cytokinesis occurs
 4 haploid offspring cells

Types of Reproduction
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Sexual Reproduction
 When 2 parents each form reproductive cells that have one half the number of chromosomes
Asexual
 When a single parent passes copies of all its genes to each offspring
 No fusion of haploids
 Spores
 Allow for reproduction without another cell
Buds off new hydra
Hydra

Types of Reproduction
 Clone
 An organism genetically identical to its parent

Meiosis in Females
 Oogenesis
 The process by Only 1 egg (ovum) forms, the other cells (Called polar bodies)die
Ovary
Ovary

 Biotechnology
 Using living things or their byproducts as a tool
 Yeast to cause dough to rise
 Genetic engineering – Big chickens, food etc
 Pollution fighting bacteria
 Genetic Recombination
 Same as crossing over
 Mixing of DNA segments

1
2
3
4
5
6 7
8

DUE TODAY
1.
Create a Venn Diagram comparing Mitosis and
Meiosis, include the following terms: Crossing over, somatic, chromosomes, haploid, diploid, gamete, nuclear envelope, cytokinesis, spindles, produces 4 new cells.
2.
3.
4.
Draw and label a chromosome: include chromosome, chromatid, and centromere.
What are the steps of mitosis and meiosis
What are the 3 main stages of the cell cycle?
Page 137 # 5,6
Page 142 # 1
Page 147 # 1,3,4
Page 150 # 1,5
Page 171 - # 3,4,5

DUE TODAY
1.
Create a Venn Diagram comparing Mitosis and
Meiosis, include the following terms: Crossing over, somatic, chromosomes, haploid, diploid, gamete, nuclear envelope, cytokinesis, spindles, produces 4 new cells.
2.
3.
4.
Draw and label a chromosome: include chromosome, chromatid, and centromere.
What are the steps of mitosis and meiosis
What are the 3 main stages of the cell cycle?

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TODAY
Viewer Lab
DUE TODAY
Tutoring after school today
(2:45-3:45) (Test Prep.)
Do not get any lab materials until after directions are given

Meiosis in Males
 Spermatogenesis
 The process by which gametes are produced in male animals
 Occurs in testes
 The 4 haploid cells change form and develop a tail

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TODAY
If you need to, finish your quiz first
Complete crossword puzzle
 Counts towards participation grade
Test
Thursday
Peacock
Mantis
Shrimp
19 Down: should be cytokinesis occurs in this type of cell, not requiring a cell plate

Take home and study this for the test on
Thursday
2. Telophase
7. Male
10. Gametes
13. Meiosis
14. Female
16. Spermatogenesis
17. Prophase
18. Interphase
21. Independent Assortment
26. Spindles
28. Chromosome
29. Somatic cell
30.Sexual Reproduction
31. Down Syndrome
32. Binary Fission
1. Fertilization
3. Autosomes
4. Gene
5. Mitosis
6. Karyotype
8. Chromatid
9. Male
11. Centromere
12. Cytokinesis
15. Asexual Reproduction
19.
Animal Cells
20.
Sex chromosomes
22. Cell Division
23. Clone
24. Cancer
25. Zygote
27. Oogenesis

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TODAY
Jeopardy Review
 Get into your groups
As usual, winners get bonus points on the test
Test tomorrow
New Rules
For Jeopardy
 No team will loose points for incorrect answers
 Each team can make 2 attempts in answering but they cannot be back to back

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TODAY
Test
 14 fill in the blanks
 36 multiple choice
Tarpon

Word Bank
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Sex
Twin
Male
Zygote
Interphase
Fertilization
Chromosome
Clone
Gene
Diploid
Homologous
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Female
Mitosis
Meiosis
Fission
Autosome
RNA
DNA
Down Syndrome
Chromatids
Karyotype
Centromere
ChromoPhoto

STUDY AID FOR
MITOSIS/MEIOSIS Test
 Somatic cells
 All cells but reproductive cells
 Diploid
 Homologous chromosomes
 Mitosis
 Gametes
 Reproductive cells
 Haploid
 Meiosis

Prokaryotes
Binary Fission
Eukaryotes
(Reproductive cells)
Gametes Somatic Cells
(Haploid) (Diploid)
Meiosis Mitosis
4 cells 2 cells
Crossing over

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Know that crossing over is unique to prophase 1 of meiosis and that it means DNA gets mixed up which causes genetic variation
Understand that a karyotype is used to identify possible genetic disorders as well as gender
Know the structure of chromosome (centromere, chromatids, gene)
Know that a gene is a small section of DNA
The 3 stages of the cell cycle and what occurs in each
(interphase (DNA duplicated), mitosis (Nucleus divides, cytokinesis (Cell or splits))
Know that spindles move chromosmes around in the cell
Know that sex chromosomes determine gender and autosomes are all other chromosomes
Male determines the gender because of the Y