Which mechanisms of gene regulation are found in eukaryotes but not in bacteria? Choose all that...
This question is about mechanisms of gene regulation in eukaryotes. a) In Drosophila melanogaster, Sex-lethal (Sxl) controls somatic sexual development. i. Describe the regulatory mechanism that leads to the presence of Sxl protein only in female early embryos. [4 marks] ii. Explain how this difference is maintained later in the life cycle [6 marks] b) List two RNA modifications present in eukaryotes. Describe in detail the function of one of these RNA modifications in a living cell. [6 marks] c)...
This question is about mechanisms of gene regulation in eukaryotes. a) In Drosophila melanogaster, Sex-lethal (Sxl) controls somatic sexual development. i. Describe the regulatory mechanism that leads to the presence of Sxl protein only in female early embryos. [4 marks] ii. Explain how this difference is maintained later in the life cycle [6 marks] b) List two RNA modifications present in eukaryotes. Describe in detail the function of one of these RNA modifications in a living cell. [6 marks] c)...
Both prokaryotes and eukaryotes regulate gene expression, turning genes on and off in response to various cues. Which of the following mechanisms is common to both types of cells? Choose all that apply. alternative splicing of mRNA opening or condensing chromatin transcriptional regulation post-translational regulation
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...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
Which of the following mechanisms to regulate gene expression are observed in eukaryotes, but are not generally observed in prokaryotes? Choose all that apply. Genes are grouped into operons, which allows transcriptional regulation to turn them all on together. RNA silencing selectively targets mRNA and destroys it to prevent further translation. Proteins can be activated or deactivated as a form of post-translational regulation. Epigenetic regulation can open or condense sectiosn of a chromosome, regulating which genes are transcribed. Regulatory proteins...
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 100 words or less, discuss the advantages of gene regulation in bacteria and eukaryotes?
Name FOUR DIFFERENT method types of gene regulation found in eukaryotes that are not found in prokaryotes.
In eukaryotes, post-transcriptional control of gene regulation may involve Question 19 options: a. alternative mRNA splicing. b. alternative mRNA splicing, control of nuclear export of mRNAs to the cytoplasm, and differential mRNA degradation. c. control of nuclear export of mRNAs to the cytoplasm. d. differential mRNA degradation.