gene expression is regulated in eukaryotes at many stages
1) translation
2) RNA processing
3) translation
4) post translational modification of protein
What are four ways in which gene expression is regulated? eukaryotes
Select all of the following ways that gene expression is regulated in eukaryotes.
Gene expression in eukaryotes is regulated at steps beyond transcription. Briefly, describe these steps and give the mechanism of regulation.
Regulation of Gene Expression in Eukaryotes In all organisms, certain genes are expressed at any given time while other genes are not. Both prokaryotes and eukaryotes regulate gene expression at the transcription stage. However the greater complexity of eukaryotic cells makes it possible for gene expression to be regulated at many other stages as well. The diagram below shows different stages at which gene expression may be regulated in eukaryotes. nucleus chro modifica anscription RNA processing cytoplasm degradation protein processing...
Discuss all the different ways and mechanisms that eukaryotes use to regulate gene expression.
Describe how the expression of this gene is regulated. Include the roles of all key players (GAL3, GAL4, GAL80, Gene promoter, RNA polymerase, and transcription factors) illustrated. Understanding regulation of transcription in eukaryotes. The images below depict how the expression of a gene required to break down lactose in yeast is regulated. The top image illustrates the key regulators of the process. The bottom two panels illustrate what happens in the presence and absence of galactose. Describe how the expression...
B. (10pts) Gene expression can be regulated in many ways. In the gene below, each letter represents a different mutation. Indicate which mutation would: (Use each letter only once.) trigger non-sense mediated decay increase transcript stability result in aberrant splicing reduce mRNA expression levels alter ADAR RNA editing promoter D — transcribed region intron A intron E exon- transcription factor binding sites exon spliced mRNA T 5'UTR CDS 3'UTR start codon stop codon C. (8pts) UAU encodes the amino acid...
Q1)Which of the following is not involved in control of gene expression in eukaryotes? A. Change to DNA sequence. B. Alternative splicing. C. Export of mRNA from the nucleus. D. Transcriptional repression. E. Destruction of mRNA Q2) Trans-acting regulators of gene expression include? A. promoters. B. histone deacetylases C. introns D. silencers E. the TATA box. Q3) Gene regulation in eukaryotes often involves which of the following, which are not also used by prokaryotes? A.RNA polymerase B.Transcription factors C.Histone modification...
A. Describe two examples (by two different methods) in Eukaryotes where gene expression is regulated after the initial RNA transcript is produced. B. While passing Brown-Forman one night after Bio 331 lab, some students discovered apparent revertants of a bacterium with an loc operator constitutive mutation (09. a. What phenotype did the original mutant have? (In other words, what is the phenotype of an Of mutant7) b. What phenotype did the original "revertant" have? c. If the revertant actually retained...
Coordinate regulation of gene expression is important both in bacteria and eukaryotes. Operons are used to co-ordinate gene expression in bacteria but NOT eukaryotes. Explain why operons strategy does not work in eukaryotes.
In eukaryotic cells, there are specific transcription factors (activators) that regulate gene expression. Describe the organization of eukaryotic genes (i.e. promoters/enhancers) and how transcription factors are able to control gene expression and enzyme activity. a) Throughout the course we discussed the enzyme lactase and how it is differently regulated (and therefore expressed) in different human populations. Describe how this gene is differently expressed in different populations and when this/these change(s) are predicted to have taken place. b) Differential gene expression...