Q. Consider the following statements:
1.MicroRNAs are small RNA molecules that play a critical role in regulating gene expression.
2.MicroRNAs can control the expression of genes after transcription.
3.Chromatography is commonly used to study microRNA expression.
Which of the statements given above are correct?
Answer: A
Notes:
Explanation –
Statements 1 and 2 are correct. MicroRNAs are small RNA molecules that are crucial in the regulation of gene expression. MicroRNAs regulate gene expression post-transcriptionally by binding to messenger RNA (mRNA) and preventing protein synthesis.
Statement 3 is incorrect. Techniques such as quantitative Polymerase Chain Reaction (PCR), microarrays, and next-generation sequencing are more commonly employed for analyzing microRNA expression.
Source: The Hindu
