Which of the following is an example of post-transcriptional control of gene expression?

A) the addition of methyl groups to cytosine bases of DNA
B) the binding of transcription factors to a promoter
C) the removal of introns and alternative splicing of exons
D) gene amplification contributing to cancer
E) the folding of DNA to form heterochromatin


Answer: C

Biology & Microbiology

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Which one of the following is TRUE regarding electrons, shells, and energy?

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Which of the following best describes the main structural components of a virus?

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Biology & Microbiology