C
Weaken, because that would mean that the DNA at the crime scene matched that of the victim instead of Suspect 2's DNA.
Figure 1 shows the gel sheet after each sample was run. Table 1 shows the distance each band traveled from the origin. The samples were run in the same gel with a DNA standard marker for comparison. Table 2 shows the results of the standard.
Figure 1. Created for Albert. All rights reserved.
Table 1
Standard (
mm
) Crime Scene (
mm
) Suspect 1 (
mm
) Suspect 2 (
mm
) Victim (
mm
)
18
29
26
29
8
23
33
29
33
18
28
34
30
34
25
34
35
32
35
30
45
47
36
47
32
47
48
48
34
Table 2
Distance (
mm
) Size of Fragment in Base Pairs (
bp
)
18
23109
23
9416
28
6557
34
4361
45
2328
47
2027
Suppose that the DNA at the crime scene had markers at
8
mm
,
18
mm
,
25
mm
,
30
mm
,
32
mm
, and
34
mm
from the origin instead of their positions at
29
mm
,
33
mm
,
34
mm
,
35
mm
,
47
mm
, and
48
mm
.
Would this support or weaken the theory that Suspect 2 was at the crime scene?
Select one answer
A
Support, because that would mean that the DNA at the crime scene matched that of both Suspect 1 and Suspect 2.
B
Support, because that would mean that the DNA at the crime scene matched that of Suspect 2 instead of the victim's.
C
Weaken, because that would mean that the DNA at the crime scene matched that of the victim instead of Suspect 2's DNA.
D
Weaken, because that would mean that the DNA at the crime scene does not match that of the DNA standard.
Weaken, because that would mean that the DNA at the crime scene matched that of the victim instead of Suspect 2's DNA.