DNA fingerprinting is a technology that is used for many different purposes. The diagram below is an illustration of what DNA fingerprinting data may look like. The image shows an illustration of what DNA fingerprinting data may look like. The first column shows a DNA fingerprint of a crime scene. The next three columns show fingerprints of three different suspects. What do the dark bands in each sample represent?
A. chromosomes
B. active DNA fragments
C. clones
D. DNA fragments of different lengths