MITOSIS MADNESS

NAME______________________________________________________________

FOLLOW THE INSTRUCTIONS CAREFULLY. BE NEAT & ACCURATE WITH DRAWINGS.

ASK QUESTIONS IF YOU DO NOT UNDERSTAND!! GOOD LUCK.

*Get plastic bag, chromosomes (4 strings of beads, 2 of each color), centrioles (small white plastic tubes),colored pencils, and tape. Follow instructions.

INTERPHASE:

1.)     Put two chromosomes (each consisting of 2 chromatids) in a plastic bag (nuclear membrane).

2.)     Put nucleus with its chromosomes in front of you.

3.)     Put two centrioles near nuclear membrane.                                

4.)     Draw what you see.

                                                                              Interphase-à

PROPHASE:

1.)     Separate the two centrioles and tape them down about 6 inches to each side of the nucleus. Point open end of each centriole toward the nucleus.

2.)     Remove chromosomes from nucleus and set nuclear membrane (bag) aside.

3.)  Draw what you see.  Also, draw lines from the centrioles to the chromosomes in your picture. Think about what these lines represent.

                                                                                      Prophase-à

METAPHASE:

1.)     Now, bring the chromosomes to the mid-point

between the two centrioles. Line them up.

2.)     Draw (Be sure to draw lines from centrioles to chromosomes.)

Metaphase-à

ANAPHASE:

1.)     Now, pull the chromosomes apart at the centromeres. When the centromeres are separated, the chromosomes become daughter chromosomes.

2.)     Continue pulling the chromosomes toward the centrioles. Note the shape they take.

3.)     Draw. (Be sure to draw lines from centrioles to chromosomes.)

                                                                                                     ßAnaphase

TELOPHASE:

1.)     Continue pulling until the chromosomes are near the centriole.

2.)     Move the chromosomes near each centriole

3.)     Draw

  Telophaseà                                   

 Nuclear Division is now complete!

Next-à a new nuclear membrane forms around each daughter chromosome

 WHAT IS THE PURPOSE OF MITOSIS?

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 WHAT ROLE DID YOU PLAY IN THIS SIMULATION? YOU WERE THE ________________________________________.