Question

When forensic experts work with a blood sample, what part of it do they use for PCR? Red blood cells, white blood cells, or proteinaceous antibodies? If trying to find a tandem repeat segment, why would you pick one choice other another?

Answer 1

Forensic experts use white blood cells from blood samples for PCR analysis. White blood cells contain nuclear DNA, which is the target of PCR amplification. If they are trying to find a tandem repeat segment, they would select white blood cells because they contain nuclear DNA where tandem repeats are located.

Step-by-step explanation:

When forensic experts work with a blood sample, they typically use white blood cells for PCR analysis. White blood cells contain nuclear DNA, which is the target of PCR amplification. Red blood cells do not have a nucleus, and proteinaceous antibodies are not used for PCR.

If forensic experts are trying to find a tandem repeat segment in the DNA, they would select white blood cells because these cells contain nuclear DNA, which is the location of tandem repeats. Tandem repeats are regions of DNA where the same sequence is repeated multiple times, and they can be useful for identifying individuals through DNA profiling.