2
1
Spindle apparatus or
mitotic spindle.
4
3
anaphase
6
5
telophase
8
The diagram is missing the
nuclear membrane which
should be beginning to dissolve
at this stage of mitosis.
7
centromere
anaphase
10
9
telophase
12
prophase
All the long chromosomes
are found on one side of the cell
and all the short ones are found on
the other. A correct diagram should
depict each side with an identical
set of chromosomes
at this stage.
11
14
13
cell plate
prometaphase
16
anaphase
15
cleavage furrow
In metaphase, the nuclear
membrane should no longer
be present.
18
17
kinetochores on the
centromeres
20
metaphase
19
prometaphase
22
anaphase
21
There should be spindle
fibers forming between the
two migrating centriole pairs.
24
sister chromatids
23
telophase
26
25
telophase
28
prometaphase
27
prophase
30
The spindle fibers should be
connected to the kinetochores
at the centromeres of the
duplicated chromosomes.
29
The two forming cells do not
contain identical sets of
chromosomes and the sister
chromatids are still connected.
32
It should have 20 chromosomes
during telophase because 10
need to be found in each daughter
cell after cytokinesis in order for the
daughter cells to have the same
number of chromosomes as
the parent cell.
metaphase
31
34
During metaphase, the
duplicated chromosomes should
be lined up along the equatorial
plate. These ones are lined up
side by side in their homologous
pairs.
36
33
prometaphase
35
telophase
38
The spindle fibers have not
pulled the sister chromatids
apart to opposite poles, instead
they have separated each
member of the homologous
pairs to opposite ends.
37 The nuclear membrane
metaphase
40
must dissolve so that the
chromosomes will be free
to become attached to
spindle fibers.
39
telophase
anaphase
42
41
metaphase
44
centrioles,
cleavage furrow
43 This diagram is missing
prometaphase
the nuclear membrane.
Though the nuclear
membrane is dissolving,
parts of it should still be
present.
During anaphase, an error
occurred that prevented
the proper separation of the
sister chromatids. This resulted
in the improper sorting of the
chromosomes into
daughter cells.
46
45
48
47
They attach to the
duplicated chromosomes to
position them at the equatorial
plate for metaphase and they pull
apart the sister chromatids
during anaphase.
prometaphase
prophase
50
49
twelve
52
51
telophase
54 Mitosis is the process of
prophase
53
sorting and dividing
chromosomes into two
identical sets during cell
division.
56
There should only be one
pair of centrioles in each
forming cell instead of the two
pairs that are shown in the
diagram.
equatorial plate
55
four