BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
2020th Edition
ISBN: 9780135686553
Author: Audesirk
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 5MC
Epigenetic modification of gene expression
a. always inhibits gene transcription.
b. always stimulates gene expression.
c. is erased from the DNA following mitotic cell division.
d. may sometimes be transmitted from generation to generation.
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Students have asked these similar questions
Which of the following is NOT a description of an epigenetic modification?
A. regulatory patterns that persisis in the absence of the original signal
B. stable alterations in gene expression without changes to the underlying DNA sequence
C. the persistence of gene expression patterns through cell division
D. an intrinsic signal that triggers cell differentiation
Epigenetic modification of gene expressiona. always inhibits gene transcription.b. always stimulates gene expression.c. is erased from the DNA following mitotic cell division.d. may sometimes be transmitted from generation to generation.
Which of the following is not a possible outcome of changing the epigenetic code?
a) exposure of regulatory region
b) binding of transcription factors
c) altered gene expression
d) repositioning of nucleosomes by polymerases
Chapter 13 Solutions
BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
Ch. 13 - 1. The molecule that carries the genetic...Ch. 13 - 2. Which of the following is not true of...Ch. 13 - 3. A stop codon
a. signals the end of protein...Ch. 13 - Prob. 4MCCh. 13 - Epigenetic modification of gene expression a....Ch. 13 - Prob. 1FTBCh. 13 - The three types of RNA that are essential for...Ch. 13 - 3. The genetic code uses______ (how many?) bases...Ch. 13 - The enzyme_______ synthesizes RNA from the...Ch. 13 - Prob. 5FTB
Ch. 13 - Prob. 6FTBCh. 13 - How does RNA differ from DNA?Ch. 13 - Prob. 2RQCh. 13 - Define the following terms: genetic code, codon,...Ch. 13 - 4. How is mRNA formed from a eukaryotic gene?
Ch. 13 - 5. Diagram and describe protein synthesis.
Ch. 13 - 6. Explain how complementary base pairing is...Ch. 13 - 7. Describe the principal mechanisms of regulating...Ch. 13 - Define mutation. Describe four different effects...Ch. 13 - Many years ago, some researchers reported that...Ch. 13 - Prob. 2AC
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- What are epigenetic modifications? a. the addition of reversible changes to histone proteins and DNA b. the removal of nucleosomes from the DNA c. the addition of more nucleosomes to the DNA d. mutation of the DNA sequencearrow_forwardEpigenetic marks regulate gene expression. Which epigenetic mark is NOT associated with positive gene expression? A. Histone acetylation B. Histone Methylation C. De-methylated DNA D. Methylated DNAarrow_forwardPost-translational control refers to: a. regulation of gene expression after transcription b. regulation of gene expression after translation c. control of epigenetic activation d. period between transcription and translationarrow_forward
- Control of gene expression in eukaryotic cells occurs at which level(s)? a. only the transcriptional level b. epigenetic and transcriptional levels c. epigenetic, transcriptional, and translational levels d. epigenetic, transcriptional, post-transcriptional, translational, and post-translational levelsarrow_forwardEpigenetic changes in gene regulation are caused by _ _ _ _ _ _ _ a. missing nucleotides or chromosomes b. modifications to histones and the DNA, but not the nucleotide sequence itself c. mutations of the nucleotide sequencearrow_forwardEpigenetic control of gene expressiona. is hereditary. c. adds methyl groups to cytosine.b. locks genes “ON.” d. Two of thesearrow_forward
- In one cell, gene C is expressed, whereas in another cell, geneC is inactive. After the cells are fused experimentally, both copiesof gene C are expressed. This observation could be explained bya. a cis-epigenetic mechanism.b. a trans-epigenetic mechanism.c. DNA methylation.d. both a and b.arrow_forwardWhich of the following is not a major mechanism of epigenetic change? a. DNA methylation b. Alteration of a DNA base sequence in a promoter c. Histone acetylation d. Action of RNA moleculesarrow_forwardWhich of the following is an example of epigenetic modulation? a) Ionization-induced DNA damage b) Single nucleotide polymorphism (SNP) c) Free-radical induced DNA damage d) Histone modifications of DNAarrow_forward
- Define Epigenetic changes. Are epigenetic changes the same thing as mutations? Explain why or why not.arrow_forwardExplain the theory of epigenesisarrow_forwardA scientist does an experiment in which she removes the offspring of rats from their mother at birth and has her genetics students feed and rear the offspring. Assuming that the students do not lick and groom the baby rats as the mother rats normally do, what long-term behavioral and epigenetic effects would you expect to see in the rats when they grow up?arrow_forward
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