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Was "mixed blood" found at the crime scene?
This bloodstain revealed the mixed DNA of Meredith and Amanda.
Meredith's genetic markers were much stronger than Amanda's, suggesting
that the sample was composed of Meredith's blood mixed with residual
DNA from Amanda. |
No. What forensic investigators found was the mixed DNA of Meredith and Amanda in a total
of six samples among dozens that were taken. Three of these samples were from the bathroom shared by the two women (the
other housemates shared a different bathroom). Mixed DNA was also found on swabs taken from Amanda's
room and a latent shoe print in the corridor. A swab from
Filomena's room revealed Meredith's DNA with what appears to be a
very weak profile for Amanda.
All of the mixed DNA samples from the bathroom were visible
bloodstains. Most likely they were composed of Meredith's blood mixed with an organic residue containing Amanda's DNA. No test was performed to
determine if any of these samples contained the blood of both Meredith
and Amanda, and there is no evidence that any of them did.
The other three mixed DNA samples were taken from latent stains revealed with luminol. No test was
performed to confirm the presence of blood in any of these samples.
Click
here to read more
about the luminol results.
The prosecutor has tried to insinuate that these findings are
incriminating, but, as with other aspects of his case, the insinuations
do not lead to a specific theory. The most plausible explanation is
that the mixed DNA is simply a result of cohabitation. As an example
for the sake of
comparison, investigators used luminol in Raffaele's
apartment and found a latent stain with the mixed DNA of him and Amanda. All
it means is that two people
have been sharing the same space.
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