NAGE 4

Question 1

What is the difference between the final mRNA and DNA of a gene?

Answer 1

The sequence information in final mRNA is encoded discontinously in the DNA of a gene

Question 2

What are exons?

Answer 2

Exons are sequences in the gene that form part of the final mRNA

Question 3

What are introns?

Answer 3

Introns are sequences of DNA that are transcribed but are edited out to make the final mRNA

Question 4

Outline in 4 steps RNA processiNG

Answer 4

1) Introns removed
2) Exons joined up
3) 5’ cap added
4) Poly A tail at 3’ end