Question

ONLY PPL WHO HAVE TAKEN/TAKING AP BIO PLS!!
30points!!

4. You have a sample of DNA that is then transcribed into RNA. You take the strands of DNA and put it into a
machine that analyzes the base composition (%A, %T, %C, % G) in each of the strands. You do the same thing with the strand of newly synthesized RNA. How could this information help you determine which strand of DNA is the template strand and which strand is the coding strand?

Answer 1

Explanation:

When an mRNA strand is synthesized from transcription, the number of Adenine, Cytosine and Guanine nucleotide bases in it will be exactly the same as in the coding/ non-template strand.

(Except the thymine bases in the non-template strand will become uracil bases in the mRNA strand, which is not analyzed by the machine here)