Multiple Choice
In forensic DNA profiling, how is DNA similar to a fingerprint?
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18. Molecular Genetic Tools
Methods for Analyzing DNA
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If you had a sample of RNA to analyze, which of the following techniques would you most likely use?
A
Southern Blots
B
SDS-PAGE Blots
C
Northern Blots
D
Western Blots
Verified step by step guidance1
Understand the purpose of each blotting technique: Southern blotting is used for DNA analysis, Northern blotting is used for RNA analysis, Western blotting is used for protein analysis, and SDS-PAGE is a technique for separating proteins based on their size.
Identify the type of molecule you are analyzing: In this problem, you are analyzing RNA.
Match the molecule type to the appropriate technique: Since you are analyzing RNA, Northern blotting is the correct technique to use.
Consider why Northern blotting is suitable: Northern blotting allows for the detection and quantification of specific RNA sequences, making it ideal for RNA analysis.
Review the other options to confirm: Southern blots are for DNA, Western blots are for proteins, and SDS-PAGE is for protein separation, none of which are suitable for RNA analysis.
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