Living Environment Translated Arabic 2014 | Page 46

C. General Notes:
1. The cell cycle is a series of events from one cell division to the
next
2. Most of a cell’s life is interphase. The cell grows and gets ready
for mitosis.
3. Mitosis is a series of four phases or steps.
4. Prophase – chromosome pairs are visible, spindle fibers begin
to form
5. Metaphase-chromosome pairs are lined up in the center of
the cell
6. Anaphase- the chromosomes separate and move to opposite
sides of the cell
7. Telophase- final phase- nucleus begins to reform; cytoplasm
begins to separate
8. Cytokinesis- the cytoplasm separates, cell plates form and two
new daughter cells are formed.
9. Mother cell- the original cell before mitosis
10. Daughter cells- cells formed at the end of mitosis
11. Mitosis forms TWO new daughter cells that are IDENTICAL to
the mother cell. The mother cell is destroyed.
12. Each new nucleus formed by mitosis has the same number and
type of chromosomes.
13. In asexual reproduction, a new organism is produced from one
organism.
14. Binary fission, budding, vegetative propagation, and
regeneration are forms of asexual reproduction.
15. During sexual reproduction, two sex cells come together.
16. Meiosis is the process that produces sex cells ( eggs and
sperms). This process results in FOUR new cells that have HALF
of the normal chromosome number.
17. Haploid cells ( ½ the original number of chromosomes) are
formed during meiosis.