Erwin Chargaff's work on the composition of nucleic acids began in 1944. His findings, which later became known as Chargaff's rules, detail the specific pairings that occur in double-stranded DNA molecules.
According to one of Chargaff's rules, section of DNA molecule that contains 50 base pairs and has 15 adenine bases must also contain ---
A.) 15 guanine bases
B.) 15 cytosine bases
C.) 15 thymine bases
D.) 15 uracil bases
According to Chargaff's rules, the amount of adenine will be equal to the amount of thymine, and the amount of guanine will be equal to the amount of cytosine in a DNA molecule. Therefore, if there are 15 adenine bases, there must also be 15 thymine bases.
Therefore, the answer is:
C.) 15 thymine bases