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PLEASE HELP ME!!!
Which of the following accurately demonstrates the DNA base pairing rule?A. A-T B. C-T C. G-A D. C-U

How can scientists use DNA in crime scene investigations?
A. They analyze the size of the DNA to determine where a crime was committed
B. They analyze the GC content of the DNA to determine how a crime was commited
C. They analyze the sequence of bases in the DNA to determine who committed a crime
D. They analyze the age of the DNA to determine when a crime was comitted