Name:
Date
Ms. Pitt, Period
DO YOU KNOW THE CELL CYCLE? (if not use your text!)
Interphase
G1 Interphase – draw 4 strands of chromatin.
S phase
G2 Interphase – draw 4 strands of chromatin (remember that
the S phase has now occurred)
Prophase – draw 4 chromosomes, draw centrioles to the left
and right sides and spindle fibers forming
M phase
Prometaphase – draw 4 chromosomes, draw centrioles to the
left and right sides with spindle fibers attached to the kinetochore
of each chromosomes. Note the nuclear envelope disappears.
Metaphase – draw 4 chromosomes lining up along the dotted
line, draw centrioles to the left and right sides and spindle fibers
connecting from the centrioles to the centromeres of the
chromosomes
Anaphase – draw the sister chromatids breaking apart and the
chromosomes moving to the left and right (4 should be moving
left and 4 should be moving right), draw centrioles to the left and
right sides and spindle fibers pulling the chromosomes
Telophase/Cytokinesis – Draw 4 chromosomes in the center
of the left and right cells, draw a new nuclear membrane, do not
draw centrioles and spindle fibers.
Name:
Date
Ms. Pitt, Period
Name:
Date
Ms. Pitt, Period
QUESTIONS
1. What part of the cell cycle, growth or division does the cell spend the majority of its life?
2. What would happen if a cell did not make a copy of its DNA (its chromosomes) before it
divided?
3. In prophase are the two chromatids of each chromosome genetically identical? How do you
know?
4. Why is it important for the chromosomes to line up during mitosis?
5. Two stages of mitosis are virtually the opposite of each other, which two?
6. Are the chromosomes and genes in the daughter cells produced by mitosis and cytokinesis the
same as or different from the chromosomes and genes in the original cell?
7. Based on the drawings, was this an animal or plant cell’s cell cycle? How can you tell?
8. Complete the table:
Phase
Number of
Strands of
Chromatin
Number of
Chromosomes
Number of
Chromatids
G1 (State the number in one cell.)
S
G2 (State the number in one cell.)
Prophase
Prometaphse
Metaphase
Anaphase
Telophase (State the number in the entire cell.)
G1 (State the number in one of the new cells.)
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Name:
Date
Ms. Pitt, Period