Question

After a complimentary mRNA strand of a gene is copied, the _______ regions must be removed using a(n) __________ because these regions ____________.

A. Introns, Exon, are damaged
B. Intron, Spliceosome, do not code for a protein
C. Exons, Spliceosome, do not code for a protein
D. Exons, Introns, are sent to separate Ribosomes for Translation

Answer 1

The correct option is B.

After a complimentary mRNA strand of a gene is copied, the Intron regions must be removed using a(n) Spliceosome because these regions do not code for a protein.

Step-by-step explanation:

Majority of the DNA does not code for any proteins. This region of the DNA is non- coding and it makes about 99% of the genome. These non- coding regions are called as introns.

Only one percent of the DNA constitutes the coding regions which actually code for proteins. The coding regions are termed as exons.

After an mRNA is formed it undergoes modification. One of the modification is the splicing of introns using the enzyme spliceosome as these regions will not code for any protein.