celldivision mitosis 101104193705 phpapp01
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Group members:SHARIFAH ROQAIYAH D20091034851NGANG HUEY CHI D20091034861YEE HON KIT D20091034822YEE CHIN TIEN D20091034824
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M
phase
G1phase
Sphase
G2phase
Mitotic cell
cycle basicallycomprised
of 4 phases:
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Ob
jectiv e
Pur
po
se
This study aims toinvestigate the effect
of drawing method ofdetermining universitystudents misconceptionsconcerning cell division mitotic cell cycle.
To identify biologystudent teachers
misconceptions of celldivisions using drawings
and interviews whichthey possess about thecell division processes
and both the contentand scope of thesemisconceptions.
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Simpleresearch
instruments
Taps holisticunderstanding
Analternative
form ofexpression
Can becompleted
quickly, easilyand in anenjoyable
way.
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1. A total of 124 student teachers, who were studying to
become secondary biology teachers at the Faculty of
Education in Selcuk University in Turkey.
2. Participants previously had studied cell division in
cytology, genetics, and molecular biology, as a school
subject during various semesters.
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Biology student teachers understanding of the
chromosomes mitosis was examined by two different
methods not mutually exclusive.
The first method is method of drawing. The
participants were informed about the drawing method
before this application and some practices were applied
about this method.
The participating students were asked to draw process
of mitosis in a cell on a blank piece of A4-sized paper.
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These drawings are analyzed and categorized into model
types corresponding to five levels of understanding.
1. No drawing
2. Non-representational drawings,
3. Drawings with misconceptions,
4. Partial drawings
5. Comprehensive representation drawings.
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The second method to examine the university students
knowledge is individual interviews.
After the drawings were evaluated, individual interviews
were conducted about the detailed subjects with 15
randomly chosen who demonstrated misconceptions.
The purpose was to check the validity of the
interpretation of the drawings. In the interview, these students were asked to respond to
questions like: What are chromosomes and sister chromatids? How do the chromosomes act during mitosis?
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Research aboutmisconception of
cell division -mitosis
Examined by twodifferent methods
Method of drawing,conducted with two
phases.
1st phase, theparticipants were
informed about thedrawing method
before thisapplication
2nd phase, the
question Drawprocess of mitosis ina cell was asked
Analysis of drawingsand categorized into
model typescorresponding to
five levels ofunderstanding
1)No drawing
2) Non-representationaldrawings
3) Drawings withmisconceptions
4)Partial drawings
5) Comprehensiverepresentation drawings
Second method -individualinterviews.
Conducted aboutthe detailed
subjects with 15randomly chosen
who demonstratedmisconceptions.
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Figure 1. Example of level 2
(non-representational drawing).
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Figure 2. Example of level 3
(drawing with misconception).
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Figure 3. Examples of level 4
(partial drawing).
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Figure 4. Examples of level 5
(comprehensive representation drawing).
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Misconception Scientific dea1. Interphase is the resting
phase of mitosis.
2. The chromosome number isdoubled in the prophase ofmitosis and halved in theanaphase of mitosis.
3. In mitosis, homologous
chromosomes separate inthe anaphase.4. Sister chromatids do not
separate in mitosis.5. The number of
chromosomes is halvedafter mitosis.
6. The number ofchromosomes is doubledafter mitosis.
1. Interphase is the first stage in mitoticcell cycle in which the cell grows
and replicates its DNA beforeundergoing mitosis (M phase) andcytokinesis.
2. In the anaphase of mitosis, thespindle separates the two sister
chromatids(not chromosome) ofeach chromosome and moves themto opposite spinde poles.
3. 4. 5. After mitosis, two daughter cells are
genetic duplicates of the parentalcell that entered mitotic division areproduced.
6.
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Figure 8. A drawing of misconception of interphase is the resting
phase of the mitosis.
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Misconceptions of cell division held bystudent teachers in biology: A drawinganalysis
Scientific Research and Essay Vol. 5 (2),pp. 235-247, 18 January, 2010
Available online at
http://www.academicjournals.org/SREISSN 1992-2248 2010 AcademicJournals