Question

Which one of the following characters doesn’t go along with tRNA?

(a) Its primary transcript is processed by proteins

(b) The cleavage at the 5’ and 3’ end of the intron is simultaneous

(c) The introns are seen in yeast and they are larger than exons

(d) ATP and GTP hydrolysis joins the two RNA halves at the two ends of the introns

I got this question in exam.

I would like to ask this question from RNA Processing Control topic in portion Regulating Gene Expression in Eukaryotes of Cytogenetics

Answer 1

The correct choice is (c) The introns are seen in yeast and they are larger than exons

Explanation: It is true that the intron is seen in the yeast tRNA primary transcript. But it is very short about 14bp and the introns in tRNA are generally much shorter than the mRNA.