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1. Possible sources of error
a) Incorrect labelling - If the tubes containing the DNA are mixed up or incorrectly labelled, then
identification of the culprit will be difficult and one may end up prosecuting an innocent person
for a crime.
b) While transferring of DNA samples in the lab, if fresh tip is not used each time, the results can
be confusing.
c) Contamination of DNA sample - If proper care is not taken during the collection of samples
from the crime scene or suspects, there is a possibility that the DNA of the handler (person who
collected or processed the sample) may get mixed, resulting into erroneus results.
d) Improper transportation or storage- If proper care is not taken while transporting or storing the
samples before being processed in lab, the DNA may get damaged or it's quality may
deteriorate. In such a situation, the whole experiment/ assessment will be of no use.
Solution
1. Possible sources of error
a) Incorrect labelling - If the tubes containing the DNA are mixed up or incorrectly labelled, then
identification of the culprit will be difficult and one may end up prosecuting an innocent person
for a crime.
b) While transferring of DNA samples in the lab, if fresh tip is not used each time, the results can
be confusing.
c) Contamination of DNA sample - If proper care is not taken during the collection of samples
from the crime scene or suspects, there is a possibility that the DNA of the handler (person who
collected or processed the sample) may get mixed, resulting into erroneus results.
d) Improper transportation or storage- If proper care is not taken while transporting or storing the
samples before being processed in lab, the DNA may get damaged or it's quality may
deteriorate. In such a situation, the whole experiment/ assessment will be of no use.

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1. Possible sources of errora) Incorrect labelling - If the tubes .pdf

  • 1. 1. Possible sources of error a) Incorrect labelling - If the tubes containing the DNA are mixed up or incorrectly labelled, then identification of the culprit will be difficult and one may end up prosecuting an innocent person for a crime. b) While transferring of DNA samples in the lab, if fresh tip is not used each time, the results can be confusing. c) Contamination of DNA sample - If proper care is not taken during the collection of samples from the crime scene or suspects, there is a possibility that the DNA of the handler (person who collected or processed the sample) may get mixed, resulting into erroneus results. d) Improper transportation or storage- If proper care is not taken while transporting or storing the samples before being processed in lab, the DNA may get damaged or it's quality may deteriorate. In such a situation, the whole experiment/ assessment will be of no use. Solution 1. Possible sources of error a) Incorrect labelling - If the tubes containing the DNA are mixed up or incorrectly labelled, then identification of the culprit will be difficult and one may end up prosecuting an innocent person for a crime. b) While transferring of DNA samples in the lab, if fresh tip is not used each time, the results can be confusing. c) Contamination of DNA sample - If proper care is not taken during the collection of samples from the crime scene or suspects, there is a possibility that the DNA of the handler (person who collected or processed the sample) may get mixed, resulting into erroneus results. d) Improper transportation or storage- If proper care is not taken while transporting or storing the samples before being processed in lab, the DNA may get damaged or it's quality may deteriorate. In such a situation, the whole experiment/ assessment will be of no use.