What is an open-reading frame?

Question

Quizplus · Accepted Answer

An open-reading frame (ORF) is the DNA region that is transcribed and translated into a protein. It is also known as the protein-encoding sequence of a gene. Therefore, option D is the correct answer while options A, B, C, and E are incorrect. Option A incorrectly refers to a non-translated region on the chromosome, which is called an intergenic region. Option B is incorrect because an unknown gene is not necessarily an ORF. Option C is incorrect because a gene that no longer has a function can still have an ORF. Option E is incorrect because introns are non-coding regions of a gene and are not part of the ORF.

What Is an Open-Reading Frame