C, Proteins is the correct answer
Down syndrome and Alzheimer's disease.
Down syndrome is a chromosomal disorder which is caused by the presence of extra copy of chromosome 21. Therefore also called as Trisomy 21.
Alzheimer's disease is a most common form of dementia(reduction in brain functioning). It is caused by mutation in single gene APP (Amyloid Precursor Protein) present on chromosomer 21.
Can we get a model to expand ?
They both contain DNA but in prokaryotic cells, the DNA isn't in a membrane-enclosed nucleus but is found floating in the cytoplasm. They both also have cell walls
