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CSU BIOL 3216 Chapter 1
NA
16
Biology
Undergraduate 3
08/18/2010

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Term
Alleles
Definition
Alternative forms of the same gene.
Term
Chromosome
Definition
A discrete complex of DNA and protein on which genetic information is carried.
Term
Deoxyribonucleic acid (DNA)
Definition
The material in cells that stores genetic information as a sequence of nucleotide base pairs.
Term
Double helix
Definition
The "twisted ladder" conformation of DNA.
Term
Gene
Definition
The fundamental physical and functional unit of heredity, composed of a segment of DNA on a chromosome encoding a functional product.
Term
Genetics
Definition
The study of the inheritance and expression of traits; the study of genes and gene action.
Term
Genome
Definition
The entire complement of genetic material (DNA) in a single set of chromosomes.
Term
Genotype
Definition
The underlying genetic constitution of an organism.
Term
Messenger RNA (mRNA)
Definition
An RNA molecule that is used to direct the synthesis of a specific polypeptide.
Term
Mutation
Definition
A stably inherited change in the nucleotide sequence of DNA.
Term
Phenotype
Definition
The observable (physical, behavioral) properties of an organism.
Term
Polypeptide
Definition
A chain of amino acids.
Term
Protein
Definition
A biological macromolecule that consists of one or more polypeptides.
Term
Ribosome
Definition
Structure in the cytoplasm on which polypeptides are synthesized.
Term
Transcription
Definition
Process by which an RNA molecule is made from a DNA template during gene expression.
Term
Translation
Definition
Process by which information in an mRNA molecule is used to direct the synthesis of a polypeptide.
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