Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 16.1, Problem 1TYK
Which of the following is an epigenetic change that alters gene expression?
- DNA methylation
- chromatin remodeling
- covalent histone modification
- localization of histone variants
- all of the above
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Which of the following types of epigenetic changes may promote cancer?a. DNA methylationb. Covalent modification of histonesc. Chromatin remodelingd. All of the above
Specific environmental or nongenetic factors can cause epigenetic modifications. Identical twins have essentially the same DNA sequences; however, aging and significant lifestyle differences cause changes in _____ because:
Genomic imprinting
Histone modification
Chromatin structure
DNA methylation
Which of the following are examples of molecular changes thatcan have an epigenetic effect on gene expression?a. Chromatin remodelingb. Covalent histone modificationc. Localization of histone variantsd. DNA methylatione. Feedback loopsf. All of the above
Chapter 16 Solutions
Principles of Biology
Ch. 16.1 - Which of the following is an epigenetic change...Ch. 16.2 - If you crossed an Igf 2 Igf 2- male mouse to an...Ch. 16.2 - Prob. 1TYKCh. 16.2 - Prob. 2TYKCh. 16.3 - Prob. 1CCCh. 16.3 - Prob. 1TYKCh. 16.3 - Which of the following statements regarding...Ch. 16.4 - Prob. 1TYKCh. 16.4 - Prob. 2TYKCh. 16.5 - Prob. 1BC
Ch. 16.5 - Prob. 1CCCh. 16.5 - Prob. 1TYKCh. 16.5 - Prob. 2TYKCh. 16.6 - Prob. 1CCCh. 16.6 - Prob. 1BCCh. 16.6 - Prob. 1TYKCh. 16.6 - Genes that are linked do not conform to Mendels...Ch. 16 - Which of the following is an example of an...Ch. 16 - In mice, the allele of the Igf2 gene that is...Ch. 16 - Prob. 3TYCh. 16 - The marking process for genomic imprinting...Ch. 16 - According to Mary Lyons hypothesis, the patchwork...Ch. 16 - Prob. 6TYCh. 16 - Prob. 7TYCh. 16 - Prob. 8TYCh. 16 - Prob. 9TYCh. 16 - Prob. 10TYCh. 16 - Prob. 1CCQCh. 16 - Prob. 2CCQCh. 16 - Prob. 3CCQCh. 16 - Prob. 1CBQCh. 16 - Prob. 2CBQ
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- Which of the following causes epigenetic modifications to DNA that affects gene expression without changing the DNA sequence? Base pair expression. DNA methylation. Mutation in regulatory sites. Gene knockout.arrow_forwardEpigenetic marks regulate gene expression. Which epigenetic mark is NOT associated with positive gene expression? Histone acetylation Histone Methylation De-methylated DNA Methylated DNAarrow_forwardPossible genetic modifications that can cause epigenetic changes in gene expression include: A- all answers are correct B- histone acetylation C- chromatin remodeling D- histone variant localization  e- DNA methylationarrow_forward
- Which of the following could represent an epigenetic modification in a cell? A. Deletion of chromosome 18 B. Acetylation of histone H3 C. Deletion of a 20-nucleotide segment of chromosome 3 D. Conversion of an A to a T within a gene E. Duplication of chromosome 13arrow_forwardWhich of the following is true about epigenetic modifications? -Epigenetic modifications always repress transcription -Epigenetic modifications are irreversible -Epigenetic modifications only occur on the tails of histone proteins -Epigenetic modifications influence the relationship between DNA and histone proteinsarrow_forwardEpigenetic changes in chromatin remodelling which selectively PREVENTS transcription Acetylation and phosphorylation of certain histone proteins Methylation Group of answer choices NEITHER 1 NOR 2 2 ONLY 1 AND 2 1 ONLYarrow_forward
- Which of the following is likely to be transcriptionally expressed? euchromatin and DNA with methyl groups euchromatin DNA with methyl groups DNA with acetylated histones euchromatin and DNA with acetylated histonesarrow_forwardWhich of the following is a method through which cells can control their gene expression? Increase a gene's stability using post-translational modifications Epigenetic modifications of the DNA or histones to regulate DNA avilability phosphorylation of thymidines formation of crosslinks between the DNA strands and the histonesarrow_forwardWhich of the following may produce more than one functional protein from an mRNA transcript?a. chromatin condensation b. transcriptional regulation c. epigeneticsd. alternative mRNA processingarrow_forward
- Small molecules binding to histone proteins also control gene expression by chromatin remodelling Group of answer choices No answer text provided. True No answer text provided. falsearrow_forwardIn all mammals, insulin growth factor 2 is expressed from only the allele that is inherited by one's father. This outcome is controlled by which of the following? Select all that apply. Nucleosome remodeling DNA methylation genomic imprinting histone acetylation histone methylationarrow_forwardGenes can be silenced through epigenetic changes that occur Genes can be silenced through epigenetic changes that occur at CpG islands located in RNA. at the C-terminus of histone tails. at lysines located in the nucleic acids sequence. at regulatory regions in DNA.arrow_forward
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