Answer Key to Cell Division/Reproduction Study Guide 2014
Name__________________
1. Compare and contrast the process of asexual cell division for prokaryotic and eukaryotic cells,
to include the different names of each process. Sentences or a Venn diagram may be used.
Both make exact copies of the parent cell, to include the DNA. Binary Fission for prokaryotic cells is
a simple process where the DNA copies itself, the cell lengthens, and then splits in to. Mitosis for
eukaryotic cells is more complicated, to include chromosomes copying themselves exactly.
2. Compare and contrast asexual with sexual reproduction for eukaryotes, to include the names
of each process and the chromosomal outcome. Sentences or a Venn diagram may be used.
Both produce new cells. For Mitosis, the daughter cells will be exact copies of the parent cell. For
Meiosis, each new cell – called a gamete – has half the chromosomes of the parent cell, and there
are some slight changes in the DNA in the chromosomes due to genetic crossover.
3. The table below describes cell processes, but scrambled as to order or timing. Provide a name
for the processes shown (some may be “early and “late”) and list the timing from 1 to 7.
Timing Name of process
Description of process
(1-7)
Anaphase
The chromosomes separate and are pulled to opposite
5
sides of the cell by the spindle fibers.
4
Metaphase
The chromosomes line up at the equator of the cell.
Interphase
Normal operation of the cell, where DNA is not visible as
the chromosomes instruct the cell what operations to
conduct.
The chromosomes decondense, becoming invisible, and a
nuclear membrane forms surrounding the area where the
chromosomes had been.
DNA duplicates itself, chromosomes start to become
visible, and other cell organelles are copied.
1
Telophase
6
2
Early prophase
Late prophase
3
Cytokinesis
7
The nuclear membrane breaks apart. Chromosomes
shorten and are now completely visible. Two pairs of
centrioles move to opposite ends of the cell. Spindle
fibers attach from them to the chromosomes.
The cytoplasm splits in two as the cell membrane (or cell
wall also, for plant cells) pinches into two equal parts.
4. In the space below (or on an attached), create a series of drawings showing
(a) normal cell operations for a cell with two pairs of visible chromosomes of unequal length.
(b) The steps of mitosis, with names for the steps and with centrioles and spindle fibers
identified.
(c) Two identical daughter cells with two pairs of visible chromosomes of unequal length.
Your artwork should be better than what I could find on the Internet, shown below.
5. In the space below, or on an attached sheet of paper, draw on cell with two pairs of
chromosomes of BOTH unequal length AND different DNA. Show the steps of both Meiosis I
and Meiosis II, to result in the appropriate number of daughter cells and appropriate number
of chromosomes.
The image below shows only one pair of chromosomes, so you should modify it for two pairs of
chromosomes, just as you did with the Straws as Chromosomes activity. Also, what the image
below shows as “DNA replication and recombination” we showed as “Genetic Crossover”. Either
phrase is appropriate for Meiosis I, so long as you also show the chromosomes being copied with
slight changes in them. Make sure that your end drawing shows half the number of chromosomes
for each gamete as the parent cell had.
1.