Just as stated and also explained, the correct answer is <span>a long chain of adenine nucleotides is added to the 3' end of mRNA during terminationof transcription. That is the only statement that is true about the polyadenylation mechanism. Hope this is helpful</span>
<span>How can a mutation in a DNA base sequence cause a change in a trait?</span>
I would say tested anything scientific comes w a hypothesis and gets tested.
