Tuesday, February 7, 2012

cell


cell
Cells are the smallest structural and functional unit of the creatures that can perform all activities of life and reproduction.

Reproductive cells or cell division are classified into mitosis and meiosis. Mitosis is the process of nuclear division of cells so that normal stem cells from a single nucleus into two nuclei of new cells, the number and arrangement of chromosomes at large. Meiosis is the division of sex cells from diploid to haploid.

Mitotic stages include:
- prophase
- metaphase
- anaphase
- telophase

Meiotic stages include:
a. prophase 1
- leptoten
- zygoten
- pachytene
- diploten
- diakinesis
b. metaphase 1
c. anaphase 1
d. telophase 1
e. prophase 2
f. metaphase 2
g. Anaphase 2
h. Telophase 2.

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