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Transcript
Mitosis (cell division) division is new generations of cells arising through the division of pre-existing cells.
It is different in Prokaryons and Eukaryons.
*Cell division in Prokaryotes:
-Prokaryons have a single, circular DNA molecule attached to the plasma membrane.
-Chromosomes are attached to membrane, and replicate.
-Cell growth occurs.
-Eventually plasma membrane pinches inward forming two new cells.
-Referred to as Binary Cell Division (binary fission).
*Cell division in Eukaryotes:
-Involves two processes: Nuclear division (division of nuclear DNA) and
Cytokinesis (physical division of cell.).
-Two types of cell division are meiosis and mitosis which are nuclear division
processes sorting and distributing DNA instructions.
-Both forms of division are usually accompanied by Cytokinesis.
-Each cell of a new generation must receive hereditary information and enough
cytoplasm machinery to start up its own operation.
MEIOSIS & MITOSIS
*Though the two processes have a lot in common (similar mechanisms and limited to
Eukaryons), they vary in their end result.