Question

Which of the following about mRNA stability is not correct?

(a) Regulation of mRNA stability is a way of regulating gene expression

(b) Prokaryotic mRNAs have a half-life of only a few minutes

(c) Histone mRNAs have especially long poly-A tails and are stable

(d) It is thought that poly-A tails stabilize eukaryotic mRNAs

This question was posed to me in class test.

This key question is from Regulation of Gene Expression in Prokaryotes-1 in section Regulation of Gene Expression and Miscellaneous of Biochemistry

Answer 1

Right option is (c) Histone mRNAs have especially long poly-A tails and are stable

For explanation: Histone mRNAs lack poly-A tails so they are unstable.