Y-STR markers are useful when multiple males are involved in a sexual assault. If three men are involved in such an attack the investigators would expect Y-STR analysis to show a maximum of:
A)Eight peaks.
B)Three peaks.
C)Six peaks.
D)Four peaks.

Question

Quizplus · Accepted Answer

Y-STR markers are located on the Y chromosome, which is passed from father to son without recombination. Each male will typically have one allele per Y-STR marker, and since there are usually multiple markers analyzed, if three men are involved, the analysis could show up to six peaks (two peaks per marker if each man has a different allele).

Y-STR Markers Are Useful When Multiple Males Are Involved in a Sexual