GRE Subject Test: Biochemistry, Cell, and Molecular Biology : Help with RNA Structure and Modification

Study concepts, example questions & explanations for GRE Subject Test: Biochemistry, Cell, and Molecular Biology

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All GRE Subject Test: Biochemistry, Cell, and Molecular Biology Resources

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Example Questions

Example Question #11 : Help With Rna Structure And Modification

Which of the following is a recognized mode of alternative splicing?

Possible Answers:

All of these

Alternative donor site

Mutually exclusive exons 

Alternative acceptor site

Exon skipping 

Correct answer:

All of these

Explanation:

The correct answer is all of the other answers. Exon skipping is the most common mode in mammals and occurs when an exon is spliced out of the primary transcript. Mutually exclusive exon splicing occurs when one of two exons is retained, but not both. Alternative donor site occurs when an alternative 5' splice junction is used which will change the 3' end of the upstream exon. Alternative acceptor site occurs when there is an alternative 3' split junction and the 5' end of the downstream exon is changed. 

All GRE Subject Test: Biochemistry, Cell, and Molecular Biology Resources

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