Answer to Question #104864 in Molecular Biology for Kylie

Question

Control of gene expression in eukaryotic cells occurs at which level(s)?
1. Only the transcriptional level
2. Epigenetic and transcriptional levels
3. Epigenetic, transcriptional, and translational levels
4. Epigenetic, transcriptional, post-transcriptional, translational, and post-
translational levels

Answer 1

4. Epigenetic, transcriptional, post-transcriptional, translational, and post-

translational levels.

Epigenetic regulation of gene expression is based on the availability of gene promoters and level of chromatin condensation. Transcriptional regulation is associated with the functioning of specific transcription factors. Translational regulation of gene expression is related to the activity of micro RNA while post-translational regulation is mediated by post-translational modifications of proteins.