<span>Mutations in small ribosomal subunit biogenesis proteins that cause disease</span>
I believe it is number 3.
Hope this helps!
Answer:
They are all built of chemically linked monomers.
DNA is the main type of genetic material found in a cell. In addition, it is found in the nucleus of the cell, so (D) is correct. DNA in the nucleus is used in replication (through mitosis and meiosis) via daughter cells to continue cell growth.