Talk:Cytosine

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Changed rating to "high" as this is high school/SAT biology content. - tameeria 21:10, 18 February 2007 (UTC)

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Changed rating to "high" as this is high school/SAT biology content. - tameeria 21:10, 18 February 2007 (UTC)

Cytosine is defined here as "one of 5 main nucleobases..."

As one of four bases in DNA, the other 3 (Guanine, Adenine and Thymine) are each defined as "one of 4 main nitrogenous bases..." Though it is true that in RNA, Uracil replaces Thymine, it (uracil) is also defined as "one of the 4 main nitrogenous bases..."

I wonder if Cytosine should be changed to also be defined as "one of 4 main nitrogenous bases" to make it consistent with the other bases, though the article for "nitrogenous base" might need to be modified to further clarify the 4 main bases in DNA (guanine, adenine, thymine and cytosine) and the additional role uracil plays in RNA.

If this change were to happen, though, "uracil" would be odd base out and the article for that would need to be modified as (stated above) it also states it is one of the 4 main bases.

The other option is to re-define each of the others to "one of 5 main nitrogenous bases" because there technically are 5, but when speaking of DNA, uracil is excluded.

Happety 14:46, 15 Dec 2003 (UTC)

It should be 5 nitrogenous bases. And who on earth put cytosine (as opposed to cytidine) triphosphate? People shouldn't modify the page if they don't know what they're doing. Kr5t 02:59, 21 May 2006 (UTC)