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Multiple Choice
Which of the following characteristics of short tandem repeats (STRs) makes it useful for DNA fingerprinting?
A
The number of repeats is highly variable from person to person or organism to organism.
B
The sequence of DNA that is repeated varies significantly from individual to individual.
C
The sequence variation is acted upon differently by natural selection in different environments.
D
Every racial and ethnic group has inherited a specific number of short tandem repeats.
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