The expression of some genes can be regulated in part by the pattern of alternative splicing.This is an example of
A) DNA methylation.
B) transcriptional regulation.
C) catalytic RNA activity.
D) posttranscriptional control.
E) the endosymbiotic theory.

Question

Quizplus · Accepted Answer

Alternative splicing occurs after transcription and can result in different versions of mRNA from the same gene. This means that the expression of the gene can be regulated at the posttranscriptional level. Option A is incorrect because DNA methylation occurs at the DNA level and does not affect alternative splicing directly. Option B is incorrect because transcriptional regulation occurs at the level of gene expression and the initiation of transcription, which is upstream of alternative splicing. Option C is incorrect because catalytic RNA activity refers to RNA molecules that can catalyze chemical reactions, and does not specifically relate to alternative splicing. Option E is unrelated to the question as it refers to the origin of eukaryotic cells.

The Expression of Some Genes Can Be Regulated in Part