00:01
Okay, in order to answer this question, we have to talk about nitrogenous bases.
00:05
Remember that nucleic acids can be either dna or rna.
00:10
Okay, and they are polymers or particularly they are made of nucleotides.
00:16
Nuclotides can have three ingredients.
00:20
First, nitrogenous bases, then paint those sugars and then phosphates.
00:26
When we talk about nitrogenous bases, they can be either purines or pyridines.
00:36
When we talk about purins, we're talking about adenine and oneing.
00:41
And when we're talking about pyrimidins, we're talking about cytosine and thymine.
00:46
Remember that thymine is present in dna, but in rna, we're going to have a uracil instead of thymine...