Which of the following statements is true?

Question

Quizplus · Accepted Answer

Introns are non-coding regions of DNA that are transcribed into pre-mRNA but are later removed by splicing, leaving only the coding regions (exons) to be translated into protein. Therefore, option D is the correct statement. Option A is incorrect because an open reading frame is a region of DNA or RNA that has the potential to be translated into a protein. It starts with a start codon (usually AUG) and ends with a stop codon (UAG, UAA, or UGA). Option B is incorrect because the coding region (exons) is what remains in the mature mRNA after splicing, while introns are removed. Option C is incorrect because introns do not carry any information for synthesizing a protein; rather, they are sequences that interrupt the coding regions.

Which of the Following Statements Is True