Are exons and introns expressed or
removed from pre-mRNA?
A. Both exons and introns are expressed.
B. Exons are expressed, and introns are removed.
C. Exons are removed, and introns are expressed.
D. Both exons and introns are removed.
The statement that is true about exons and introns of pre-mRNA is:
Exons are expressed, and introns are removed.
What is pre-mRNA?
Precursor mRNA or pre-mRNA is the first transcript of a protein-coding gene.
Characteristics of pre-mRNA
Introns are the DNA or RNA sequences that separate the exons, the pre-mRNA regions corresponding to these are eliminated in the nucleus during the maturation process.
The exons of a gene are the sequences that will give the messenger RNA that will be translated into amino acids.
Therefore, we can conclude that the pre-mRNA maturation process removes introns and joins exons to produce a mature messenger RNA molecule.
Learn more about pre-mRNA maturation here: https://brainly.com/question/9076330
