The question is incomplete as it does not have the option which are:
A) There are 20,000 genes.
B) Each gene codes for one protein.
C) Any other regions are "junk" DNA.
D) There are also genes for RNAs other than mRNA.
E) The species is highly evolved.
Answer:
D) There are also genes for RNAs other than mRNA.
Explanation:
The protein-coding sequence refers to the sequence which can code for a protein and is therefore also known as the coding sequence.
The coding sequence codes for the protein by producing a messenger molecule which caries the message or codes for the protein called mRNA.
But the cell also requires other types of RNA like tRNA or rRNA which are sloe encoded on the genetic material.
In the given question, since the genome contains the 20,000 protein-coding region which codes for protein shows that it also contain the coded information not for only proteins but for molecules other than protein like RNAs.
Thus, the selected option is the correct answer.
