Question

The genes in eukaryotes are said to be split as

• A. They have introns only
• B. They have interrupted coding sequence
• C. Mature mRNA contains both exons and introns
• D. They have exons only

Answer 1

The correct option is B They have interrupted coding sequence

The genes in eukaryotes are said to be split because the pre-mRNA has both introns and exons in them after the genes have been transcribed. For the mature mRNA to be formed the non functional regions (introns) have to be spliced to form a continuous stretch of exons only. The spliced mRNA will then be able to produce a functional protein after successful translation by the ribosome.

So, the correct option is 'They have interrupted coding sequence'.