Which gene described below is most likely regulated at the posttranscriptional level?
A) Gene A,which shows a strong positive correlation between the amount of mRNA produced and the amount of protein produced
B) Gene B,which shows no clear correlation between the amount of mRNA produced and the amount of protein produced
C) Gene C,which lies near the heterochromatin
D) Gene D,which has more than a typical number of CpG islands
E) Gene E,which has fewer than a typical number of CpG islands

Question

Quizplus · Accepted Answer

Gene B shows no clear correlation between the amount of mRNA produced and the amount of protein produced, which suggests that posttranscriptional regulation may be at play. This could include mechanisms such as alternative splicing or regulation of mRNA stability. The other choices do not necessarily suggest posttranscriptional regulation. Gene A's correlation suggests that transcriptional regulation may be the primary mode of control. Gene C's location near heterochromatin may affect chromatin structure and accessibility, but this is not directly related to posttranscriptional regulation. Genes D and E's CpG island content may affect transcriptional regulation but are not directly related to posttranscriptional control.

Which Gene Described Below Is Most Likely Regulated at the Posttranscriptional