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Chapter 8 Section 1
Chromosomes
11
Biology
9th Grade
04/14/2010

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Term
chromosome
Definition
rod-shaped structures made of DNA and proteins
Term
histone
Definition
a protein that chromatin wraps its DNA around in eukaryotic cells
Term
chromatid
Definition
half a chromosome
Term
centromere
Definition
the point where two chromatids of a chromosome are attached
Term
chromatin
Definition
less tightly coiled DNA-protein complex
Term
sex chromosomes
Definition
chromosomes that determine the sex of an organism
Term
autosomes
Definition

the other 44 chromosomes in an organism besides the sex chromosomes

 

Term
homologous chromosomes
Definition
the two copies of each autosome also called homologues
Term
karyotypes
Definition
a photomicrograph of a divinding cell
Term
diploid
Definition
the two sets of chromosomes in a cell
Term
haploid
Definition
cells with half the number of chromosomes
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