By necessity, which of the following will be included in an open reading frame?
A) A transposable element
B) A start codon
C) A chromatin sequence
D) Regulatory sequences
E) All of the above

Question

Quizplus · Accepted Answer

An open reading frame refers to a sequence of DNA or RNA that lacks stop codons and can potentially encode a protein. Therefore, a start codon is necessary to initiate translation and begin the reading frame. The other choices are not necessary for an open reading frame. A transposable element is a mobile genetic element that can move around the genome and disrupt gene expression, but it is not required for a reading frame. Chromatin sequences refer to the packaging of DNA into chromatin, and while they can affect gene regulation, they do not determine the presence of an open reading frame. Regulatory sequences such as promoters and enhancers control gene expression but do not have a direct impact on the reading frame itself.

By Necessity, Which of the Following Will Be Included in an Open