the bases of dna
Attached to each sugar is one of four bases--adenine A cytosine C guanine G or thymine T. There are four nitrogenous bases that occur in DNA molecules. Discovery Of The Structure Of Dna Article Khan Academy Molecule Diagram Dna Molecule Biology Worksheet Adenine A thymine T guanine G and cytosine C. . These instructions are inscribed in the structure of the DNA molecule through a genetic code. Adenine A thymine T guanine G and cytosine C. Cytosine C and thymine T are the smaller pyrimidines. Three of these are the same as in DNA. A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. DNA is made of nucleotides which have a sugar a phosphate and a nitrogenous base. How are the bases of DNA held together. After the bases of DNA were identified Erwin Chargaff analyzed the percentages of adenine thymine guanine and cytosine in the DNA of many different organism...