The correct option is C Specific sequence of deoxyribonucleotides
A gene is the functional unit of heredity.
In majority of organisms, it is a stretch of DNA (polymer of deoxyribonucleotides).
Since alleles are alternative forms of a gene, hence, they are also composed of specific nucleotide sequences which have coding characteristics.
RNA is a polymer of ribonucleotides and it plays a major role during protein synthesis.
Sequences of amino acids make up polypeptide chains and proteins.
Long chains of monosaccharides form polysaccharides, which are carbohydrates.