nucleobases

Nucleobases are the building blocks of DNA and RNA, which carry genetic information. They are organic molecules that form pairs—Adenine with Thymine (in DNA), and Cytosine with Guanine, with RNA replacing Thymine with Uracil. These bases are like the letters in a biological alphabet, storing instructions for how living organisms develop and function. They pair specifically through hydrogen bonds, creating the rungs of the DNA double helix. The sequence of these bases encodes genetic information, guiding cell activities and inheritance.