In gene expression, ________.

Question

Quizplus · Accepted Answer

In gene expression, DNA acts as a template for the synthesis of RNA through transcription. This RNA molecule then acts as a template for the synthesis of a polypeptide chain through translation. Therefore, DNA directs the synthesis of RNA which then directs the synthesis of a polypeptide. Choice A is incorrect because DNA does not directly synthesize a polypeptide without first synthesizing RNA. Choice B is incorrect because RNA does not determine the sequence of DNA, but rather is made from a DNA sequence. Choice D is incorrect because polypeptides do not direct the synthesis of RNA or DNA, but rather are themselves synthesized based on the genetic information in DNA.

In Gene Expression, ________