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D.Sykes
Mitosis
6
Science
7th Grade
01/28/2010

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Term
Cell division
Definition
the formation of two daughtor cells from a single parent cell
Term
Centriole
Definition
a cyllindrical organelle in animal cells that is involved in mitosis

centrioles form spindl fibers which separate chromosomes during mitosis
Term
centromere
Definition
the part of a chromosome where the chromatids are attached

during mitosis spindle fibers attach to the chromosome at the centromere
Term
Chromatid
Definition
One of two identical halves of a replicated chromosome
Term
Chromatin
Definition
DNA strands in the Nucleus during interphase.

Chromatin stains dark so it is relatively easy to see
Term
Chromosome
Definition
a structure formed from condensed chromatin.

Chromosomes consist of two identical chromatids attached at the centromere,giving it an X shape

Chromosomes occur in pairs.Human cells Have 23 pairs.
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