Which of the Following Characteristics of Short Tandem Repeats (STRs)

Multiple Choice

Which of the following characteristics of short tandem repeats (STRs) DNA makes it useful for DNA fingerprinting?

A) The number of repeats is highly variable from person to person or animal to animal.
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 different short tandem repeats.