DNA is fundamental to the biology of all life on Earth, but how many of us actually know what it is or what it's made of?

DNA and RNA are composed of nucleotides that are linked to one another in a chain by chemical bonds, called ester bonds, between the sugar base of one nucleotide and the phosphate group of the ...

(Image: Public Domain) Guanine has the chemical formula C₅H₅N₅O and a molecular weight of ... This strong base pairing is crucial for the stability of the DNA double helix and the accurate replication ...