DNA and RNA

DNA

• a long chain polymer of nucleotide monomers
• this polymer is called a polynucleotide
• DNA is formed by two polynucleotides joining together
• hydrogen bonds between the bases

Hydrogen Bonding And Base Pairing

• the two DNA strands run parallel to each other and the space between them is taken up by the nitrogenous bases projecting inwards
• where a pyramine appears on one side, a purine is on the other
• where the purine is adenine, the pyramine is always thymine
• where the purine is guanine, the pyramine is always cytosine
• as the strands…