Question
If there is 15% adenine in a chromosome, what is the percentage of each of the other DNA nucleotides?
Answers
GPT-4o mini
In DNA, the four nucleotides are adenine (A), thymine (T), cytosine (C), and guanine (G). According to Chargaff's rules, the amount of adenine in a DNA molecule is equal to the amount of thymine (A = T), and the amount of cytosine is equal to the amount of guanine (C = G).
Since you have 15% adenine (A), this means that:
- The percentage of thymine (T) is also 15%.
This accounts for 30% of the total composition of the DNA.
The remaining percentage for cytosine (C) and guanine (G) will be:
100% - 30% = 70%.
Since cytosine and guanine are equal in percentage:
C = G = 70% / 2 = 35%.
Therefore, the percentages of each nucleotide in the DNA are:
- Adenine (A): 15%
- Thymine (T): 15%
- Cytosine (C): 35%
- Guanine (G): 35%
Since you have 15% adenine (A), this means that:
- The percentage of thymine (T) is also 15%.
This accounts for 30% of the total composition of the DNA.
The remaining percentage for cytosine (C) and guanine (G) will be:
100% - 30% = 70%.
Since cytosine and guanine are equal in percentage:
C = G = 70% / 2 = 35%.
Therefore, the percentages of each nucleotide in the DNA are:
- Adenine (A): 15%
- Thymine (T): 15%
- Cytosine (C): 35%
- Guanine (G): 35%