Cell Division
7/6/2011
CELL DIVISION
CHAPTER 3: CELL DIVISION
3.1 THE CONCEPT OF CELL DIVISION 3.2 THE CELL CYCLE 3.3 MITOSIS 3.4 MEIOSIS
Related to the theory of cells Rudolph virchow ; 1855 stated; „Omnis cellula e cellula‟ Every cell is from a cell or “All new cells are derived from other cells”
A cell (daughter cell) is originated from another cell ( ) through . In cell division, is inherited from one generation to the next. Involve the distribution of genetic material (DNA) to each daughter cell.
A dividing cell….. ◦ DNA its chromosome ; its The division of cells in the body are strictly regulated by a control mechanisms The division of cells that do not follow the control mechanisms will produce “tumor cells”
◦ Equal distribution of genetic material to opposite ends of cell ◦ One cell splits into 2 daughter cells by
1
7/6/2011
Cell division : process of forming daughter cells from single mother cell Begins with the division of (karyokinesis) and followed by division of (cytokinesis) Cell division can be divided into two types :&
TERMINOLOGIES
DNA Chromosome Chromatin Chromatid Sister chromatids Centromere Kinetochore
THE CONCEPT OF CELL DIVISION
DNA and Chromosomes
Chromosomes of eukaryotic cells are composed of DNA & proteins.
DNA & Chromosomes
Chromatin
Refer to the chromosomes in the form of „threads‟ Very and ; can‟t be seen under light microscope
Chromatid
Chromosome that become , & can be seen under light microscope. (when chromatin becomes densely coiled & folded) Has two ; both have identical copies of DNA (produce from DNA replication)
Centromere
The region which two attached to each other.
2
7/6/2011
THE IMPORTANCE OF CELL DIVISION Kinetochore
A protein that is located at A structure to which of spindle fiber is attached * refer diagram .
Enable organism to perform 3 fundamental activities of life: 1- Growth •
CELL DIVISION
CHAPTER 3: CELL DIVISION
3.1 THE CONCEPT OF CELL DIVISION 3.2 THE CELL CYCLE 3.3 MITOSIS 3.4 MEIOSIS
Related to the theory of cells Rudolph virchow ; 1855 stated; „Omnis cellula e cellula‟ Every cell is from a cell or “All new cells are derived from other cells”
A cell (daughter cell) is originated from another cell ( ) through . In cell division, is inherited from one generation to the next. Involve the distribution of genetic material (DNA) to each daughter cell.
A dividing cell….. ◦ DNA its chromosome ; its The division of cells in the body are strictly regulated by a control mechanisms The division of cells that do not follow the control mechanisms will produce “tumor cells”
◦ Equal distribution of genetic material to opposite ends of cell ◦ One cell splits into 2 daughter cells by
1
7/6/2011
Cell division : process of forming daughter cells from single mother cell Begins with the division of (karyokinesis) and followed by division of (cytokinesis) Cell division can be divided into two types :&
TERMINOLOGIES
DNA Chromosome Chromatin Chromatid Sister chromatids Centromere Kinetochore
THE CONCEPT OF CELL DIVISION
DNA and Chromosomes
Chromosomes of eukaryotic cells are composed of DNA & proteins.
DNA & Chromosomes
Chromatin
Refer to the chromosomes in the form of „threads‟ Very and ; can‟t be seen under light microscope
Chromatid
Chromosome that become , & can be seen under light microscope. (when chromatin becomes densely coiled & folded) Has two ; both have identical copies of DNA (produce from DNA replication)
Centromere
The region which two attached to each other.
2
7/6/2011
THE IMPORTANCE OF CELL DIVISION Kinetochore
A protein that is located at A structure to which of spindle fiber is attached * refer diagram .
Enable organism to perform 3 fundamental activities of life: 1- Growth •