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%
Question
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%
Solution
In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). This means that the percentage of adenine is equal to the percentage of thymine, and the percentage of guanine is equal to the percentage of cytosine.
Given that the percentage of thymine is 23%, the percentage of adenine is also 23%.
Since the total percentage of adenine and thymine is 46% (23% + 23%), the total percentage of guanine and cytosine must be 54% (100% - 46%) to make up the full 100% of the DNA strand.
However, since guanine and cytosine pair up and their percentages are equal, the percentage of guanine must be half of 54%, which is 27%.
So, the correct answer is B27%.
Similar Questions
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.
If the DNA in a cell consists of 20% adenine, then it will also contain ___ guanine.Multiple Choice20%80%30%40%10%
The following bases are found found in DNA except one:Select one:A.uracilB.cytosineC.adenineD.guanine
In a certain DNA molecule, the composition is 30% thymine (T) and 20% cytosine (C). If the total number of base pairs is 500, how many thymine bases are present?
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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