Question

If you are the DNA analyst, you should conclude that:

A. Both Suspects A and B are excluded as the source of the evidence.
B. Suspect A is excluded as the source of the evidence, but Suspect B cannot be excluded.
C. Suspect B is excluded as the source of the evidence, but Suspect A cannot be excluded.
Because both bands of Suspect A match those found in the male fraction of the sex assault evidence, A cannot be excluded as a source of the DNA. However, because Suspect B has no matching bands with the male fraction of the vaginal swab, Suspect B can be excluded.
D. Neither Suspect A or B can be excluded as a source of the evidence.
E. Suspect B cannot be excluded as a source of the evidence. The results with Suspect A are inconclusive

Answer 1

Suspect B is excluded as the DNA source from the evidence, while Suspect A cannot be excluded based on matching band patterns in DNA fingerprinting.

Step-by-step explanation:

If you are the DNA analyst, you should conclude that Suspect A cannot be excluded as the source of the DNA found in the male fraction of the sexual assault evidence. This is because both bands of Suspect A match those found in the evidence, indicating a match. Conversely, Suspect B is excluded as the source of the evidence as there are no matching bands between Suspect B's DNA and the male fraction of the vaginal swab. The correct answer to the question would be: Suspect B is excluded as the source of the evidence, but Suspect A cannot be excluded.

DNA fingerprinting is a crucial technique in forensic science, involving the comparison of DNA from a known individual to unknown samples obtained from crime scenes. This method utilizes Restriction Fragment Length Polymorphism (RFLP) analysis and Polymerase Chain Reaction (PCR) to amplify DNA samples and compare the banding patterns after agarose gel electrophoresis, providing a basis for inclusion or exclusion of individuals as potential sources of evidence.