celldivision mitosis 101104193705 phpapp01

8/12/2019 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

celldivision mitosis 101104193705 phpapp01

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