The amount of thymine in the DNA will be 18%.
DNA Bases
DNAs generally consist of 2 types of bases:
- Purine bases
- Pyrimidine bases
The purine bases are of two types:
- Adenine
- Guanine
The pyrimidine bases are also of two types:
- Thymine
- Cytosine
According to Chargaff, the ratio of purine to pyrimidine bases is constant for all DNAs. Adenine always pairs with Thymine while Guanine always pairs with cytosine.
Thus, for every DNA molecule:
Adenine = Thymine
Guanine = Cytosine.
In this case, guanine is 32%. This means that cytosine will also be 32%.
32 + 32 = 64%
100 - 64 = 36%
36/2 = 18%
This means that thymine and adenine will be 18% each.
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