If 30% of the bases in a particular DNA molecule are guanine (G), calculate the percentage of the bases would be thymine (T). Explain your reasoning.
Question
If 30% of the bases in a particular DNA molecule are guanine (G), calculate the percentage of the bases would be thymine (T). Explain your reasoning.
Solution
In a DNA molecule, the bases pair up in a specific way: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). This is known as the base pairing rule or Chargaff's rule.
Given that 30% of the bases are guanine (G), it means that 30% of the bases must also be cytosine (C) because G pairs with C.
So, we have 60% of the DNA molecule accounted for (30% G and 30% C).
The remaining 40% must be made up of adenine (A) and thymine (T), which pair together.
Since A pairs with T, they must be present in equal amounts. Therefore, 20% of the bases would be adenine (A) and 20% of the bases would be thymine (T).
So, if 30% of the bases in a particular DNA molecule are guanine (G), 20% of the bases would be thymine (T).
Similar Questions
DNA contains four unique bases: adenine, thymine, guanine, and cytosine. These bases pair up in a complementary fashion. This pairing pattern allows for a decrease in mutations during replication and transcription. Scientists are analyzing a specific segment of DNA that contains 23%23% thymine.Using the information presented above, what percent of the bases would be guanine?Elimination ToolSelect one answerA23%23%B27%27%C46%46%D54%
If the DNA in a cell consists of 20% adenine, then it will also contain ___ guanine.Multiple Choice20%80%30%40%10%
In a certain DNA molecule, the composition is 30% thymine (T) and 20% cytosine (C). If the total number of nucleotides is 500, how many thymine bases are present?
Chargaff’s rules states that:Answers: A. The amount of guanine equals the amount of cytosineB. The amount of adenine equals the amount of cytosineC. The amount of purines equals the amount of pyrimidinesD. The amount of adenine equals the amount of thymineE. The amount of guanine equals the amount of thymine
The following are complementary bases in DNA:Group of answer choicesadenine and thymine.adenine and cytosine.guanine and thymine.guanine and uracil.
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