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Mitosis and Meiosis
part of the cell cycle
21
Biology
10th Grade
01/06/2015

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Term
Gene
Definition
The most basic physical unit of heredity.
Term
Chromosome
Definition

In a eukaryotic cell, one of the structures in the nucleus that are

made up of DNA.

Term
Chromatin
Definition
The substance that composes eukaryotic chromosomes.
Term
Chromatid
Definition
One of the two stands of a chromosome that become visible during meiosis.
Term
Centromere
Definition
The region of the chromosome mitosis that holds the two sister chromatids together during mitosis.
Term

Cell Cycle

 

 

Definition
the life cycle of a cell.
Term

Interphase

 

Definition
the period of the cell cycle during which activites such as cell growth.
Term
Mitosis
Definition
In Eukaryotic cells, a process of cell divisoin that forms two new nuclel.
Term
Cytokinesis
Definition
the division of the cytoplasm of a cell.
Term
Spindle
Definition
A network od microtubules that forms during mitosis and moves chromatids.
Term
Independent Assortment
Definition
the random distribution of the pairs of genes on different chromosomes to the gametes.
Term
Centrosome
Definition
an organelle that contains the centrioles and is the centerof dynamic activity in mitosis.
Term
cancer
Definition
a type of disorder of cell growth that results i invasion.
Term
Tumor
Definition
a growth that arises from normal tissue but that grows abnormally rate.
Term
Gamete
Definition
a haploid reproductive cell that unite with another haploid cell to form a zygote.
Term
zygote
Definition
the cell that results from the fusion of gametes.
Term
diploid
Definition
a cell that contains two haploid sets of chromosomes.
Term
haploid
Definition
describes a cell, nucleus,or organism that has only one set of unpaired chromosomes.
Term
homologous chromosome
Definition
chromosomes that have the same sequence of genes.
Term
meiosis
Definition
a process in cell division during which the number of chromosomes different.
Term
crossing-over
Definition
the exchange fo genetic material between homologous chromosome durig meiosis.
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