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32 Cards in this Set
- Front
- Back
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Which one is a database |
HOLMES |
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What was the first murder case solved by DNA |
Colin Pitchfork |
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What is the probability of matching a full profile to a full sibling on the NDNAD |
1 in 10,000 |
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Which of these extraction techniques is a specialised technique? |
Differential |
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A semen sample is viewed under a compound microscope using a x40 objective lens. What is the overall magnification |
400 times |
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Which of the following substances is not found in seminal fluid? |
Maltose |
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The presumptive test for blood relies on the action of which enzyme? |
Peroxidase |
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Which of the following statements is not true regarding the Chelex 100 extraction? |
All the above statements are correct. |
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Low template DNA is defined as? |
Any sample with less than 200pg of DNA. |
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Forensic DNA analysis is routinely performed using? |
Capillary electrophoresis |
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In differential extraction the pelleted sperm cells are lysed with the addition of a chemical to disrupt the sulphur bonds in the coating of the spermatozoa. That chemical is called? |
Dithiothreitol (DTT) |
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Genetic profiles may not be loaded for inclusion on the NDNAD if? |
They have yielded a partial profile containing allelic information for the six loci used in the old SGM system. |
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The use of fluorescent dyes enables STR regions to be amplified simultaneously. They dues that were used in SGM plus multiplex system are called? |
Fam, Joe, Ned and Rox. |
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Which of the following statements is correct regarding the use of STR markers in genetic profiling? |
They have a narrow allelic range. |
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The biological technique of taking a sample and multiplying it to make millions of identical copies of the same sample is known as? |
Polymerase Chain Reaction. |
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Blood stains can be best detected on a dark surface by? |
Ultraviolet Radiation |
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The custodian of the NDNAD is the? |
Home Office |
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Measurement of amount of a chemical is not important in which of the following forensic tests? |
Chemical nature of glass |
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Which of the following techniques is not routinely used for the analysis of alcohol in the body? |
HPLC |
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Which of the following is a presumptive test for blood? |
Luminol |
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In the presence of seminal fluid, the reagent alpha napthyl phosphate will produce what colour? |
Purple |
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Low template DNA samples can yield useful DNA profiles as a result of? |
All of the above |
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Alpha amylase may be found in? |
All of the above |
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DNA multiplexes contain? |
All of the above |
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Which of the following is an example of low probative evidence? |
Finding semen on the inside of a rape suspects underwear. |
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DVI - disaster victim identification utilise? |
All of the above |
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Where would you most likely find an STR? |
Intron |
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In Qiagen extraction, the DNA is eluted by? |
Washing with water |
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Which of the following are components of the Christmas tree staining procedure for sperm identification? |
Nuclear fast red and acid indigocamine |
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Which of the following cannot be used in a presumptive test for seminal fluid? |
Phenolpthalein |
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Which one of the following statements is incorrect? |
Gas-liquid chromatography uses a liquid as the mobile phase. |
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35 packages of powder. Of these packages, 6 packages were taken at random and found to contain cocaine. The total weight of the 6 packages was 54.02g and the purity was determined as 37%. The total weight of the pure cocaine in the 35 packages was likely to be? |
117g |
