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.

Question

Quizplus · Accepted Answer

The high variability in the number of repeats of STRs from person to person or animal to animal is what makes them useful for DNA fingerprinting. This variability results in unique STR profiles for each individual, which can be used to identify or distinguish them.

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