Modification of the Primary Transcript

Question 1

Introns

Answer 1

Regions of the gene that don’t code for proteins which will be cut out of the transcript through the process of splicing.

Question 2

Exons

Answer 2

Regions of the gene that code for proteins.

Question 3

Why splicing is necessary

Answer 3

The primary transcript must be modified to allow translation of the coding regions on,y.

Question 4

Why are there introns?

Answer 4

They are required to regulate transcription - by having binding sites for other chemicals that can switch off neighbouring genes.

Question 5

RNA splicing

Answer 5

Process that removes introns from the primary transcript, the remaining exons are spliced together (order remains the same) to form a continuous sequence known as the mature transcript.

Question 6

Mature transcript

Answer 6

Transcript obtained after the process of splicing composed of only exons which will then leave the nucleus and travel to the cytoplasm to continue protein synthesis.