DNA composition and structure Flashcards
1
Q
polymer of nucleotides
A
purines: adenine (A) and guanine (G)
pyrimidines: thymine (T) and cytosine (C)
2
Q
double helix
A
composed of 2 DNA strands
3
Q
DNA strands are held together by
A
H bonds between A-T and C-G nitrogenous bases