1. CC EE LL LL
D I V I S I O ND I V I S I O N
ESPEJO, MIRELLA ISOBEL
LOPEZ, RANILIN KEREN
SANTOS, ANDEA ALYSSA
SEMILLA, LORENZO JOHN
VIBAL, AUDREY
YNIGUEZ, MARCO VINCENT
12-EINSTEIN
6. MITOSISMITOSIS CELL DIVISIONCELL DIVISION
○ Mitosis is how somatic (non-reproductive
cells) divide.
○ Mitosis is where a single cell (parent cell)
divides into two cells (daugther cells) that
are replicas of each other and have the
same number of chromosomes.
7. MITOSISMITOSIS CELL DIVISIONCELL DIVISION
○ The daughter cells from mitosis are called
DIPLOID CELLS. Diploid cells have two
complete sets of chromosomes.
8. MITOSISMITOSIS CELL DIVISIONCELL DIVISION
○ Since the daughter cells have exact copies
of their parent cell's DNA, no genetic
diversity is created through mitosis in
normal healthy cells.
○ This type of cell division is good for basic
growth, repair, and maintenance.
10. PROPHASE
Chromosomes become visible, spindle fibers
form, and nuclear envelope breaks up.
Disintegration of nuclear envelope happens.
Mitotic spindle forms.
11. METAPHASE
Chromosomes are exposed to the mitotic
spindle and the spindle fibers attach.
Chromosomes line in the middle of the cell
and spindle fibers pull them.
12. ANAPHASE
Chromatids separate and move to the poles;
spindle fibers pull them.
Spindle fibers not attached to any chromatid
lengthen, thus elongating the cell.
13. TELOPHASE
Chromosomes decondense to become thin
threads of chromatin, spindle fibers
disassemble, and nucleus envelope forms
daughter cells.
16. MEIOSISMEIOSIS CELL DIVISIONCELL DIVISION
○ In meiosis, a cell divides into two cells
that have half the number of
chromosomes.
○ Reduction of the number of
chromosomes by half is important for
sexual reproduction.
17. MEIOSISMEIOSIS CELL DIVISIONCELL DIVISION
○ Meiosis creates sex cells, like female egg
cells or male sperm cells.
○ In meiosis, each new cell contains a
unique set of genetic information.
○ After meiosis, the sperm and egg cells can
join to create a new organism.
19. PROPHASE I
○ Each chromosome pair forms a tetrad with
its homologous chromosome
METAPHASE I
○ Spindle fibers attach to the chromosomes,
tetrids align at center
20. ANAPHASE I
○ Fibers pull homologous chromosomes
towards opposite ends of the cell
TELOPHASE I
○ Reformation of the nuclei
