A poly A tail helps attach the ribosome to the mRNA molecule and may also determine how long the mRNA is retained within the cell.

Question

Quizplus · Accepted Answer

A poly A tail is a string of adenine nucleotides added to the 3' end of an mRNA molecule after transcription. The poly A tail helps to protect the mRNA from degradation and also plays a role in translation by assisting in the attachment of the ribosome to the mRNA. The length of the poly A tail can vary and may determine how long the mRNA is retained within the cell before being degraded.

A Poly a Tail Helps Attach the Ribosome to the MRNA