What is d. n. a. made of?
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE