Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 7TYK
What is a pseudogene?
- a. a gene that has been rendered nonfunctional by mutation
- b. a transposon that codes for a transposase
- c. a functional but slightly altered copy of an existing gene
- d. a unique noncoding DNA
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Students have asked these similar questions
Which type of mutation would expect would have no effect on a protein coding gene in eukaryotes?
a.a single base substitution that creates a splice site mutation
b.a single base substitution that creates a synonymous mutation
c.a single base deletion that creates a frameshift near the 3' end of the open reading frame
d.a single base substitution that creates a non-conservative missense mutation
e.a single base substitution that creates a conservative missense mutation
Which statement about transposons is INCORRECT?
a.A transposon is a small fragment of DNA that can move from one location in a chromosome to another location in the same chromosome.
b.Transposon insertion into a gene causes a mutation that can be reversed by removal of the transposon.
c.Transposon movement often occurs when the cell is under genomic stress.
d.In nature, insertion of a transposon can be deliberately added into a harmful gene to enhance survival.
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 sequence
Chapter 21 Solutions
Study Guide for Campbell Biology
Ch. 21 - In what ways would third-generation sequencing be...Ch. 21 - Prob. 2IQCh. 21 - Refer to the organisms listed in Table 21.1 in...Ch. 21 - Explain why retrotransposons always move by the...Ch. 21 - For each of the following types of DNA sequences...Ch. 21 - Prob. 6IQCh. 21 - Prob. 7IQCh. 21 - If all Hox genes contain the same or very similar...Ch. 21 - About 25% of the human genome relates to the...Ch. 21 - Prob. 2SYK
Ch. 21 - Which of the following has decreased the time and...Ch. 21 - Prob. 2TYKCh. 21 - In the process called gene annotation, computer...Ch. 21 - Prob. 4TYKCh. 21 - Prob. 5TYKCh. 21 - Prob. 6TYKCh. 21 - What is a pseudogene? a. a gene that has been...Ch. 21 - Prob. 8TYKCh. 21 - Which of the following is common to both...Ch. 21 - Prob. 10TYKCh. 21 - Prob. 11TYKCh. 21 - Prob. 12TYKCh. 21 - Prob. 13TYKCh. 21 - Prob. 14TYKCh. 21 - Compared to genes in mice and chimpanzees, most...
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- The original DNA base sequence is 5’-AGCGTTACCGT-3’; a mutation in the DNA strand results in the base sequence 5’-AGGCGTTACCGT-3’. What can you conclude about the mutation? A. It is a frameshift mutation. B. It is a silent mutation. C. It is a deleterious mutation. D. It may result in a single amino acid change in the protein being coded for by this base sequence.arrow_forwardDefine the following terms: a. A-DNA b. B-DNA c. pseudogene d. cruciform e. intronarrow_forwardWhat did the Hershey / Chase experiments (above) demonstrate about the molecules responsible for genetic inheritance patterns in the T2 bacteriophage? A. the genetic material consists of carbohydrates, not RNA B. the genetic material consists of protein, not lipids C. the genetic material consists of DNA, not polypeptides D. the genetic material consists of protein, not DNA E. the genetic material consists of lipids, not polypeptidesarrow_forward
- What will most likely be the effect of the change in the DNA molecule? * A. the change will cause a harmful mutation B. the DNA molecule will be unable to replicate C. the organism will be reproduce D. the DNA molecules will code for a different protein Original strand: T A C G T A T G A A G C, Mutant strand: T A G C T A T G A A G C. what type of mutation? * A. Substitution B. Deletion C. Insertion D. Nonsense Which mechanism contributes to accuracy during DNA Replication? * A. The mismatch repair system recognizes an incorrect base-pair and corrects the mistake in the non-methylated strand B. Using primers increase accuracy because the first nucleotides is a new nucleic acid chain are more like to be correct. C. all DNA polymerase have a 5'-3' exonuclease activity which can remove…arrow_forwardWith regard to transcriptional termination in eukaryotes, which model suggests that RNA polymerase is physically removed from the DNA? a. Allosteric model b. Torpedo model c. Both models d. Neither modelarrow_forwardIf eukaryotes have monocistronic genes, why is the number of known proteins more than the number of known genes? A. Post-translational modification B. Alternative splicing C. Base substitution D. Post-transcriptional modificationarrow_forward
- What does it mean for a transposable element to be effectively “dead”? A. The transposable elements are “dead” because they are only found in non-coding regions and therefore do not interfere with phenotypic expression. B. The transposable elements are “dead” because they are no longer able to undergo transposition and move to another region of the genome. C. The transposable elements are “dead” because they do cause disease despite their presence. D. The transposable elements are “dead” because they occur only in somatic cells and therefore are not heritable.arrow_forwardWhy are errors in DNA methylation so destructive to cells? a. They cause improper activation or inactivation of DNA segments coding for important genes or micro RNAs. b. They cause improper methylation of proteins. c. They cause improper methylation of mRNA transcripts. d. All of these are possible explanations for methylation error damage..arrow_forwardExplain each optionsarrow_forward
- According to our class discussions, which of the following is the most correct definition of a mutation? a. A permanent, heritable change in DNA base sequence b. Changes in the form of DNA packaging used in the nucleus C. Damage to DNA caused by random chemical reactions inside cells d. Damage to DNA bases caused by environmental factors, such as UV light or cigarette smokearrow_forwardAddition or deletion of bases causes which kind of mutation? Select one: a. Frameshift mutation b. Transversion c. Transition d. Transcriptionarrow_forwardWhat processing step enhances the stability of pretRNAs and pre-rRNAs? a. methylation b. nucleotide modification c. cleavage d. splicingarrow_forward
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