Answer:
C.Noncoding DNA
Explanation:
''Noncoding DNA does not provide instructions for making proteins. Scientists once thought noncoding DNA was “junk,” with no known purpose. However, it is becoming clear that at least some of it is integral to the function of cells, particularly the control of gene activity.
<em>-MedlinePlus Geneticsmedlineplus.gov › genetics › understanding ›basics ›</em>
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''It is important to note that DNA damage, in and of itself, does not necessarily lead ... type of point mutation, called a nonsense mutation, converts a codon encoding an ... Because codons are triplets of nucleotides, insertions or deletions in groups of ... Beneficial mutations generally code for new versions of proteins that help...''
<em> – Chemistrywou.edu › courses › online-chemistry-textbooks › chap.</em>
''Non-coding DNA sequences do not code for amino acids. Most non-coding DNA lies between genes on the chromosome and has no known function. Other non-coding DNA, called introns, is found within genes. Some non-coding DNA plays a role in the regulation of gene expression.''
<em>- Institutewww.genome.gov › genetics-glossary › Non-Coding-DNA</em>
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