What are the four levels of control of gene expression in eukaryotes?
Control of gene expression in eukaryotic cells occurs at epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels.
What is the gene expression in eukaryotes?
Gene expression in eukaryotes is influenced by a wide variety of mechanisms, including the loss, amplification, and rearrangement of genes. Genes are differentially transcribed, and the RNA transcripts are variably utilized. Multigene families regulate the amount, the diversity, and the timing of gene expression.
At which level the regulation of gene expression in eukaryotes can be done?
Gene regulation can occur at any point of the transcription-translation process but most often occurs at the transcription level. Proteins that can be activated by other cells and signals from the environment are called transcription factors.
What are the steps of regulation of gene expression?
Regulated stages of gene expression Chromatin, chromatin remodeling, chromatin domains. Transcription. Post-transcriptional modification. RNA transport.
Why is gene regulation in eukaryotes more complex?
Eukaryotic gene expression is more complex than prokaryotic gene expression because the processes of transcription and translation are physically separated. Unlike prokaryotic cells, eukaryotic cells can regulate gene expression at many different levels.
How is gene expression different in eukaryotes and prokaryotes?
Prokaryotic gene expression (both transcription and translation) occurs within the cytoplasm of a cell due to the lack of a defined nucleus; thus, the DNA is freely located within the cytoplasm. Eukaryotic gene expression occurs in both the nucleus (transcription) and cytoplasm (translation).
How is gene expression regulated in prokaryotes and eukaryotes?
Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level. Eukaryotic gene expression is regulated during transcription and RNA processing, which take place in the nucleus, and during protein translation, which takes place in the cytoplasm.