Which of the following changes to DNA can be part of epigenetic regulation of gene expression?...
Which of the following changes to DNA can be part of epigenetic regulation of gene expression? Choose both correct answers.
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degradation of mRNA that is no longer needed |
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methylation of DNA |
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acetylation |
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alternate mRNA splicing |
Homework Answers
Acetylation, Methylation of DNA
Epigenetic inheritance or epigenetic regulation or chromatin remodeling or histone modification are all cinemas terms. They signify the inheritance of certain characteristics which is not explained on the basis of sequence of DNA. They depend upon the modification of histone proteins which are associated with DNA. These proteins are basic proteins rich in lysine and arginine. Addition of specific chemical groups like phosphate, acetyl, methyl, glucose and others at specific amino acid of histone proteins leads to change in gene expression. So, acetylation and methylation are both a type of histone modification.
Degradation of messenger RNA that are no longer useful occurs at the level of post transcriptional regulation.
Alternative splicing occurs at the level of RNA processing.
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Which of the following changes to DNA can be part of epigenetic
regulation of gene expression?...
Possible genetic modifications that can cause epigenetic changes in gene expression include: (Select all that apply)...
Possible genetic modifications that can cause epigenetic changes in gene expression include: (Select all that apply) DNA methylation chromosomal inversion. chromatin remodeling. histone acetylation. genomic imprinting. mRNA degradation. histone variant localization
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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...
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Possible genetic modifications that can cause epigenetic changes in gene expression include: (Select all that apply) DNA methylation chromosomal inversion. chromatin remodeling. histone acetylation. genomic imprinting. mRNA degradation. histone variant localization
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 are methods employed by cells to control gene expression? (hint: select all options that apply) Multiple answers: You can select more than one option O A Chromatin remodeling B Histone acetylation O c DNA methylation
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