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Gene Technology
Ch13 Sec1
7
Biology
10th Grade
03/14/2011

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Term
Length Polymorphism
Definition
Variations in the length of DNA mlecule between known genes.
Term
Variable Number Tandem Repeats (VNTR)
Definition
A location in a genome where a short nucleotide sequence is organized as a tandem repeat. These can be found on many chromosomes, and often show variations in length between individuals.
Term

Polymerase Chain Reaction (PCR)

Definition
A technique that quickly produces many copies of DNA fragment.
Term
Primers
Definition
Artificially made pieces of single-stranded DNA that are 20-30 nucleotides long that must be present for DNA polymerase to initiate replication.
Term
Resriction Enzymes
Definition
Recognize specific short DNA sequences and cut the DNA in or near the sequence.
Term
Gel Electrophoresis
Definition
Seperates  nucleic acids or protiens according to their size and charge.
Term
DNA Fingerprint
Definition
The pattern of bands that results when an individual's DNA sample is radiolabeled and exposed to xrays after being fragmented, replicated and seperated.
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