1

2003/2004 Mitosis & Meiosis1

Mitosis & Meiosis

How do cells make more of themselves?

2003/2004 Mitosis & Meiosis2

The Cell Cycle

n Interphase is the longest phase

n DNA is synthesized in the the middle of interphase, between G1 and G2

n Mitosis and Cell Division take up a relatively short time

2003/2004 Mitosis & Meiosis3

Mitosis: An Overview

n Prophase

n Metaphase

n Anaphase

n Telophase

2003/2004 Mitosis & Meiosis4

Interphase

These are animal cellsHow can you tell?

2

2003/2004 Mitosis & Meiosis5

Prophase

Note how the chromosomes are condensing

Note the spindle fibers forming

Is this a plant or an animal cell?

How do you know?

2003/2004 Mitosis & Meiosis6

Metaphase

Plant cells

How do you know?

2003/2004 Mitosis & Meiosis7

Anaphase

Plant CellsHow can you tell?

2003/2004 Mitosis & Meiosis8

Telophase

Plant Cells

How can you tell?

3

2003/2004 Mitosis & Meiosis9

Cytokinesis in Plant and Animal Cells

Animal or Plant?

How can you tell? 2003/2004 Mitosis & Meiosis10

Can You Name These Stages?

Prophase Anaphase Metaphase

2003/2004 Mitosis & Meiosis11

Mitosis Simulation

2003/2004 Mitosis & Meiosis12

Allium: The Onion Root Tip

Identify as many stages as you can !

4

2003/2004 Mitosis & Meiosis13

What Are These Stages?

2003/2004 Mitosis & Meiosis14

And These Stages?

2003/2004 Mitosis & Meiosis15

Meiosisn Prophasen Metaphase I

n Anaphase In Telophase I

n Cytokinesisn Metaphase II

n AnaphaseIIn TelophaseII

n Cytokinesis

2003/2004 Mitosis & Meiosis16

Prophase I

5

2003/2004 Mitosis & Meiosis17

Metaphase I

2003/2004 Mitosis & Meiosis18

Anaphase I

2003/2004 Mitosis & Meiosis19

Telophase I

2003/2004 Mitosis & Meiosis20

Cytokinesis

6

2003/2004 Mitosis & Meiosis21

Mitosis and Meiosis Compared

Mitosis:Chromosomes double

Meiosis:Chromosomes

double and form tetrads

2003/2004 Mitosis & Meiosis22

Mitosis & Meiosis Compared

2003/2004 Mitosis & Meiosis23

Meiosis Simulation

2003/2004 Mitosis & Meiosis24

What Happens After Meiosis?

7

2003/2004 Mitosis & Meiosis25

Sperm and Eggs: Male and Female Gametes

2003/2004 Mitosis & Meiosis26

Sources of Images and Movies

http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/cell_cycle.html

http://www.biology.arizona.edu/cell_bio/tutorials/meiosis/main.html

http://buglady.clc.uc.edu/biology/bio104/carter.htm

http://digitalfrog.com/resources/froggallery.html