Genetic Code

Mediumbiology

If the sequence of nitrogen bases of the coding strand of DNA in a transcription unit is 5'-ATGAATG-3', the sequence of bases in its RNA transcript would be:

Select the correct option:

5'-AUGAAUG-3'

5'-UACUUAC-3'

5'-CAUUCAU-3'

5'-GUAAGUA-3'

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About This Question

Subject: biology
Chapter: molecular basis of inheritance
Topic: genetic code
Difficulty: Medium
Year: 2025

Solution

Correct Answer:

5'-AUGAAUG-3'

The coding strand has the same sequence as the RNA transcript (except T is replaced by U). So, 5'-ATGAATG-3' becomes 5'-AUGAAUG-3'.

This medium difficulty biology question is from the chapter molecular basis of inheritance, covering the topic of genetic code. It appeared in the 2025 exam.

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Genetic Code

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