Question

cell differentiation is the result of gene expression. Genes can be regulated several ways. For example, small inferences RNA molecules (siRNA), prevent Jean expression by binding to the product of transcription. How do siRNA molecules silence genes?

they find to RNA polymerase

they bind to ribosomes

they bind to tRNA

they bind to mRNA

Answer 1

siRNA prevent gene expression by binding to the product of transcription because they bind to mRNA

Explanation:

siRNA  are short-sequence RNA strands, about 20 bp long, that bind to complementary regions on transcribed mRNA. This causes the formation of regions of dsRNA on the mRNA. This subsequently result in recruitment of  enzymes such as Diver enzyme to cleave the mRNA and hence rendering it ineffective for translation into proteins. This is how siRNA negatively regulate genes, a process that has also been identified in research as a window to remedy genetic diseases.

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