Multiple Choice
In forensic DNA analysis, which part of a hair is most likely to contain nuclear DNA suitable for STR profiling?
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18. Molecular Genetic Tools
Methods for Analyzing DNA
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In agarose gel electrophoresis, what is the primary purpose of a DNA ladder?
A
To ligate DNA fragments together by catalyzing phosphodiester bond formation
B
To denature double-stranded DNA into single strands prior to electrophoresis
C
To provide a set of DNA fragments of known sizes used to estimate the length (in base pairs) of sample DNA fragments
D
To stain DNA so bands can be visualized under UV or blue light
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