Nitrogenous Base question (1 Viewer)

BrookSteven

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Question 20 of the 2007 HSC paper asked to complete a table by "identifying the other three base types and calculating the percentage of each base type in the section of double-stranded DNA".

Bases: Percentage:
Adenine 20
Thymine ?
Guanine ?
Cytosine ?


Does anyone know the answer to this?
 

Just.Snaz

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You know that for EVERY adenine base, there is a corresponding Thymine base. So if there's 20 for adenine then there's 20 for thymine. Same goes for Guanine and Cytosine so you take the remaining %, ie, 60 and divide by two because they have to be equal so it's
A --> 20
T --> 20
G --> 30
C --> 30
 

BrookSteven

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Thanks alot. That is what I originally had for the answer, but I was going off of nothing but intuition. I feel kind of silly now for not looking at it that way.
 

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