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BIO 172
TEST 3
13
Biology
Undergraduate 1
11/01/2008

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Term
gamates
Definition
sperm and eggs... reproductive cells
Term
somatic cells
Definition
other cells that are not reproductive cells
Term
mitosis
Definition
a division of the genetic material that produces daughter cells that are genetically identical to their parent cell.
Term
cytokinesis
Definition
the division of the cytoplasm into the two daughter cells
Term
chromosome
Definition
a single long molecule of DNA and any associated proteins
Term
Mitotic phase (M phase)
Definition
the phase of the cell cycle during which cell division occurs.  Includes mitosis and cytokinesis
Term
cytokinesis
Definition
division of the cytoplasm to form two daughter cells.  Typically occurs immediately after division of the nucleus byt mitosis or meiosis. 
Term
interphase
Definition

 

The part of the cell cycle during which no cell division occurs.  Includes G1, S, G2 

Term
S phase
Definition
The phase of the cell cycle during which DNA is synthesized and chromosomes are duplicated
Term
G1 phase
Definition
the phase of the cell cycle that constitues the first part of interphase before DNA synthesis
Term
G2 phase
Definition
the phase of the cell cycle between synthesis of DNA and mitosis; last part of interpahse
Term
gene
Definition
segment of DNA that contains the infor for synthesizing a particular polypeptide or RNA molecule
Term
chromatin
Definition
the material that makes up euk chromosomes: a DNA molecule complexed with histone proteins.  Cna be highly compacted (heterocromatin) or filamentous (euchromatin)
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