The body of a young victim of murder is found in an advanced state of decomposition and cannot be identified. Police suspect the victim is one of five persons reported by their parents as missing. DNA typing is carried out on tissues from the victim (X) and on the five sets of parents (A–E), using probes for a highly polymorphic DNA marker on two different chromosomes (“locus 1” and “locus 2”). The result is shown in the accompanying diagram. How do you interpret the fact that genomic DNA from each individual yields two bands? Can you identify the parents of the victim? Explain your reasoning.