Differences between DNA and RNA

DNA	RNA
Double stranded helix (anti-parallel)	Single stranded
Bases are G,C,A,T	Bases are G,C,A,U
Sugar is deoxyribose	Sugar is ribose
Replicates from self (semi-conservative). New strand growsfrom 5' to 3'	Transcribed from DNA template (anti-sense strand)

	Purines (big groups)	Pyrimidines (small groups)
Base pairs	G --------	-------- C
	A --------	-------- T

	Purines (big groups)	Pyrimidines (small groups)
Base pairs	G --------	-------- C
	A --------	-------- U

Note: U replaces T