Name ______________________________ Class ___________________ Date _______________
Skills Worksheet
Cell Cycle and Mitosis
SEQUENCING
The figure below illustrates the life cycle of a eukaryotic cell, which is known
as the cell cycle. The names of the phases have been omitted from the figure.
Use the figure below to complete items 1–8.
In the space provided in the figure below, write the letter of the phase of the
cell cycle that matches each phase in the figure.
PHASES OF THE CELL CYCLE
a.
b.
c.
d.
prophase
G1
telophase
metaphase
e.
f.
g.
h.
S
cytokinesis
G2
anaphase
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science: Biology
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Cell Cycle and Mitosis
Name ______________________________ Class ___________________ Date _______________
Cell Cycle and Mitosis continued
In the space provided below each animal cell, write the name of the stage of
mitosis that is represented.
Determine the order in which the following four stages of mitosis take place.
Write the number of each step in the space provided.
_____ 13. anaphase
_____ 14. metaphase
_____ 15. telophase
_____ 16. prophase
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science: Biology
12
Cell Cycle and Mitosis
Name ______________________________ Class ___________________ Date _______________
Skills Worksheet
Meiosis
SEQUENCING/ORGANIZING INFORMATION
In the space provided in the figure below, write the letter of the stage of
meiosis from the list below (a–h) that matches each stage in the figure.
Stages of Meiosis
a.
b.
c.
d.
anaphase II
metaphase I
anaphase I
metaphase II
e.
f.
g.
h.
telophase II and cytokinesis
telophase I and cytokinesis
prophase I
prophase II
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science: Biology
13
Meiosis
Name ______________________________ Class ___________________ Date _______________
Meiosis continued
In the space provided, write the letter of the description that best matches the
stage of meiosis.
_____ 9. metaphase I
_____ 10. prophase II
_____ 11. telophase I
_____ 12. metaphase II
_____ 13. telophase II
_____ 14. anaphase II
_____ 15. prophase I
_____ 16. anaphase I
a. A new spindle forms around the chromosomes.
b. Chromatids remain attached at their
centromeres as the spindle fibers move the
homologous chromosomes to opposite poles of
the cell.
c. A nuclear envelope forms around each set of
chromosomes, the spindle breaks down, and the
cytoplasm divides, resulting in four haploid
cells.
d. Chromosomes gather at the poles; the
cytoplasm divides.
e. The nuclear envelope breaks down; genetic
material is exchanged through crossing-over.
f. Chromosomes line up at the equator.
g. Pairs of homologous chromosomes line up at
the equator.
h. Centromeres divide, enabling the chromatids,
now called chromosomes, to move to opposite
poles of the cell.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science: Biology
14
Meiosis
Name ______________________________ Class __________________ Date ______________
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science: Biology
15
Meiosis