Multiple Choice
Which of the following functional groups is present in alcohols?
2. Molecular Representations
Functional Groups
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Which of the following functional groups is commonly found in CpG islands?
A
Methyl group
B
Amino group
C
Hydroxyl group
D
Carboxyl group
Verified step by step guidance1
Understand the context: CpG islands are regions of DNA with a high frequency of cytosine and guanine nucleotides linked by a phosphate bond. These regions are often associated with gene regulation.
Identify the functional group in question: The problem asks which functional group is commonly found in CpG islands.
Recall the role of methylation: In the context of CpG islands, methylation refers to the addition of a methyl group (CH₃) to the cytosine base, which can affect gene expression.
Consider the options: Methyl group, Amino group, Hydroxyl group, Carboxyl group. Among these, the methyl group is directly involved in the methylation process of CpG islands.
Conclude the reasoning: Since methylation of cytosine in CpG islands is a common epigenetic modification, the functional group commonly found in CpG islands is the methyl group.
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