Question

genes are made of.

a. carbohydrates
b. lipids
c. proteins
d. nucleotides

Explanation:

Genes are segments of DNA (deoxyribonucleic acid). DNA is a nucleic acid, and nucleic acids are made up of nucleotides. Carbohydrates are energy - providing molecules (e.g., glucose). Lipids are fats and oils. Proteins are made up of amino acids and have various functions like enzymatic activity, structural support etc. But genes (DNA) are composed of nucleotides.

Answer:

d. nucleotides