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STR VNR

STR Wikipedia notes: Class of polymorphisms (two or more phenotypes existing among the same species) Occurs when two or more nucleotides are repeated in a pattern. The pattern is created when the repeated sequences are directly next to each other and are the same exact pattern repeated 2-6 times short tandemly repeated DNA sequences 13- all the places it is repeated, no two people have the same number of repeats in their 13 strands

STR- Short tandem repeat Highly useful method for DNA analysis STR is a shorter sequence or repeat than a VNTR Class of polymorphisms (two or more phenotypes existing among the same species) Occurs when two or more nucleotides are repeated in a pattern. The pattern is created when the repeated sequences are directly next to each other and are the same exact pattern repeated 2-5 times short tandemly repeated DNA sequences 13- all the places it is repeated, no two people have the same number of repeats in their 13 strands

STR- tandem repeats of short DNA sequences, from 2-5 base pairs, each individual has different number of repeats found within their DNA STR- Short tandem repeat Tandem- next to one another

STR- The FBI uses a standard set of specific STR regions of CODIS. A software program known as CODIS operates local, state and national databases of DNA profiles from convicted offenders, missing persons and unsolved crime scene evidence. There is a very small change that two individuals would have the same repeated sequecne in their thirteen DNA chains.

VNTR

VNTR- tandem repeats of short DNA sequences, from 9-80 base pairs, each individual has a different number of repeats within their DNA VNTR- variable number of tandem repeats





Most common method used to identify a suspect in a case when blood appears in a crime scene.

Became a popular method in the late to mid 1900's

Chapter notes VNTR- Variable, number of tandem repeats- repetition of short DNA sequences of 9 to 80 base pairs. It has varying numbers of repeats among individuals. Short sequences of DNA are repeated multiple times in non-coding sections of DNA Used for fingerprinting. Used in crime scenes to find the suspects DNA. Successful method used to identify a suspect in a crime scene investigations because it is very unlikely that two people involved would have the same repeated base sequences within their DNA. It can clearly eliminate and identify an individual suspect.

[|http://www.ornl.gov/sci/techresources/Human_Genome/elsi/forensics.shtml] Wikipedia Book notes
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