The correct difference between DNA and RNA is: DNA contains thymine, RNA contains uracil.
Here’s a brief overview of the other statements to clarify why they are inaccurate:
- DNA is single-stranded, RNA is double-stranded: This is incorrect; DNA is typically double-stranded, while RNA is usually single-stranded.
- DNA is found only in the nucleus, RNA only in the cytoplasm: This is also incorrect; while DNA is primarily located in the nucleus, some RNA can be found in the nucleus as well.
- DNA is made of amino acids, RNA is made of nucleotides: This is incorrect; both DNA and RNA are made of nucleotides. DNA consists of the nucleotides deoxyadenosine, deoxycytidine, deoxyguanosine, and deoxythymidine, while RNA consists of adenine, cytidine, guanosine, and uridine.
Thus, the distinction regarding thymine and uracil is the accurate choice.