Answer:
Highly repetive sequences of DNA called STRs:
STR analysis is a tool in forensic analysis that can be used STR for
human identification, paternity analysis and genetic mapping.
STR loci consist of short, repetitive sequence elements of 3 to 7
bases pairs in length, and may be amplified using the
polymerase chain reaction (PCR).
Explanation:
S hort T andem R epeat (STR) analysis is a common molecular biology
method used to compare allele repeats at specific loci in DNA
between two or more samples. A short tandem repeat is a
microsatellite with repeat units that are 2 to 7 base pairs in length,
with the number of repeats varying among individuals, making STRs
effective for human identification purposes. [1] This method differs
from restriction fragment length polymorphism analysis (RFLP) since
STR analysis does not cut the DNA with restriction enzymes.
Instead, polymerase chain reaction (PCR) is employed to discover
the lengths of the short tandem repeats based on the length of the
PCR product.