Chromosomes are made of protein and DNA.
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That depends. DNA undergoing replication is assisted by varieties of proteins to make a new strand. Also, in order for DNA to be coiled into chromosomes, the DNA must be wrapped around the protein histone. But in the actual structure of DNA, no, there are no proteins.
Viruses are pathogens made from RNA or DNA and are encapsulated in a protein shell.
Protein
Genes are made up of DNA. DNA have codes to form proteins
The Dna letter is a nucleotide base. It is made from a series of nucleotide base substrates.