38018043 Misconceptions of Cell Division Held by Student Teachers

MISCONCEPTIONS OF CELL DIVISION HELD BY STUDENT

TEACHERS IN BIOLOGY : A DRAWING ANALYSIS

MUSA DIKMENLY

HILDA ANAK EMAK

D20091034831

MUNIRAH BT SAFIEE

D20091034844

AMIRAH BT SHAARI

D20091034830

AIN NAJWA BT AMRAN

D20091034825

GROUP MEMBER

DNA replication occurs in prophase during the process of cell divisions.

Interphase is the resting phase of mitosis. A chromosome has always two chromatids

during cell division. Diploid (2n) cells are formed as a result of

meiosis. Centrioles are found in the nucleus of a cell.

MISCONCEPTIONS

Scientific explanation

1) DNA replication occurs in prophase during the process of cell divisions.

- scientific explanation-

DNA replication occurs in S phase ( DNA Synthesis) before

enter mitosis.

2) Interphase is the resting phase of mitosis.

Interphase is the resting phase before a

dividing cell enter mitosis.

-scientific explanation-

3) A chromosome has always two chromatids during cell division

-scientific explanation-

During anaphase 1, homologous

chromosome separate, sister chromatids remain

together.

4) Diploid (2n) cells are formed as a result of meiosis.

-scientific explanation-

Meiosis is the process of nuclear division in a living cell by which the chromosomes number is reduced to half from a diploid number (2n) to a

haploid number (n)At the end of meiosis four haploid

(n) nuclei are formed.

5) Centrioles are found in the nucleus of a cell.

-scientific explanation-

Centrioles are found near the nucleus so that it can form mitotic spindle during the prophase of the cell cycle.

Drawing

Technique used

Level 1: No Drawing: Students replied, “I don’t know,” or no response was given to the statement. Level 2: Non-Representational Drawings: These drawings included identifiable elements of cell division. Also the responses, which included diagrams or formulations instead of the drawings, were evaluated in this category . Level 3: Drawings with Misconceptions: These types of drawings showed some degree of understanding on cell division concepts, but also demonstrated some misconceptions. Level 4: Partial Drawings: The drawings in this category demonstrated partial understanding of the concepts. They included elements of the cell division like prophase, metaphase, anaphase, telophase, etc. Level 5: Comprehensive Representation Drawings: Drawings in this category were the most competent and realistic diagrams of cell division . These drawings showed a sound understanding and contained seven or more elements of the validated response for this particular statement.

Level 2

Level 3

Level 4

Level 5

Biology student teachers’ understandings of the cell division as shown in their drawing

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