CAMPBELL BIOLOGY,VOL.II >CUSTOM<
17th Edition
ISBN: 9781323803677
Author: Urry
Publisher: PEARSON
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Chapter 25.5, Problem 3CC
MAKE CONNECTIONS Ø Given that changes in morphology are often caused by changes in the regulation of gene expression, predict whether noncoding DNA is likely to be affected by natural selection. See Concept 18.3 to review noncoding DNA and regulation of gene expression.
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Chapter 25 Solutions
CAMPBELL BIOLOGY,VOL.II >CUSTOM<
Ch. 25.1 - What hypothesis did Miller test in his classic...Ch. 25.1 - How would the appearance of protocells have...Ch. 25.1 - MAKE CONNECTIONS In changing from an "RNA world"...Ch. 25.2 - Describe an example from the fossil record that...Ch. 25.2 - WHAT IF? Your measurements indicate that a...Ch. 25.3 - The first appearance of free oxygen in the...Ch. 25.3 - What evidence supports the hypothesis that...Ch. 25.3 - WHAT IF? What would a fossil record of life today...Ch. 25.4 - Explain the consequences of plate tectonics for...Ch. 25.4 - What factors promote adaptive radiations?
Ch. 25.4 - Prob. 3CCCh. 25.5 - Explain how new body forms can originate by...Ch. 25.5 - Why is it likely that Hox genes have played a...Ch. 25.5 - MAKE CONNECTIONS Given that changes in morphology...Ch. 25.6 - How can the Darwinian concept of descent with...Ch. 25.6 - Prob. 2CCCh. 25 - Describe the roles that montmorillonite clay and...Ch. 25 - What are the challenges of estimating the ages of...Ch. 25 - What is the "Cambrian explosion," and why is it...Ch. 25 - Explain how the broad evolutionary changes seen in...Ch. 25 - How could changes in a Single gene or DNA region...Ch. 25 - Explain the reasoning behind the Statement...Ch. 25 - Level 1: Knowledge/Comprehension 1. Fossilized...Ch. 25 - The oxygen revolution changed Earth's environment...Ch. 25 - Prob. 3TYUCh. 25 - Prob. 4TYUCh. 25 - Which of the following steps has not yet been...Ch. 25 - Prob. 6TYUCh. 25 - Prob. 7TYUCh. 25 - EVOLUTION CONNECTION Describe how gene flow,...Ch. 25 - Prob. 9TYUCh. 25 - WRITE ABOUT A THEME: ORGANIZATION You have seen...Ch. 25 - Prob. 11TYU
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- Create a Venn diagram to compare and contrast the process of gene expression in Bacteria versus eukaryotes. Remember that “gene expression” can include any part of transcription or translation. Try to be as thorough as you can about what aspects of this process are similar between the two taxa, and what characteristics are distinct to only Bacteria or eukaryotes. Plase include a minimum of 15 items in the Venn diagram.arrow_forwardHow does the chromosomal genetic system in animals permit both precise control of gene content and expression in cells and an opportunity for enormous amounts of genetic variation?arrow_forwardconcept defines a species as a group of organisms that are capable of exchanging Mayr's genes. O biological species. O cladogenic species O phylogenetic species O evolutionary species O morphospecies Which of the following statements is FALSE? Histone acetylation leads to decreased gene expression. O DNA methylation is associated with epigenetic gene repression. Actually, these are all true statements. O DNA methylation is catalyzed by DNA methyltransferases. Histones can be methylated at lysine residues.arrow_forward
- 4e. You also study the expression of 3 different mutants for this gene. For each mutant answer the following: Does this mutation change the sequence of the protein produced? Why or why not? If it does change the sequence of protein be sure to write out the new sequence. If it does not change the protein sequence, what effect (if any) would you expect it to have on expression of the gene? 1 20 ORI 40 60 5'...TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGTAATATGGGGATGCACTATC...3' 3' ...AAGCTCGAGAGCAGCAGCTCTATGCGCTACTATAATGACCATTATACCCCTACGTGATAG...5' * promoterarrow_forward4e. You also study the expression of 3 different mutants for this gene. For each mutant answer the following: Does this mutation change the sequence of the protein produced? Why or why not? If it does change the sequence of protein be sure to write out the new sequence. If it does not change the protein sequence, what effect (if any) would you expect it to have on expression of the gene? 1 20 ORI 40 60 5'..TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGTAATATGGGGATGCACTATC...3’ 3'...AAGCTCGAGAGCAGCAGCTCTATGCGCTACTATAATGACCATTATACCCCTACGTGATAG...5’ promoter i. Mutant A has a single base pair substitution with the T/A being replaced with C/G base pair at position 35 (position denoted by the * in the sequence above). ii. Mutant B has a 2 G/C pairs inserted between position 19 and 20 (position denoted by the ^ in the sequence above).arrow_forward. a. If you found a zinc-finger domain (which facilitates DNA binding) in a newly identified gene,what kinds of hypotheses could you make aboutthe gene’s function?b. Suppose that this newly identified gene shares ahigh percentage of similarity throughout its lengthwith a previously characterized gene in the sameorganism. What does this fact suggest about the origin of the two genes? Would you categorize thesegenes as being: (i) homologous, (ii) paralogous, or(iii) orthologous? (More than one answer may apply.)arrow_forward
- 5. This diagram illustrates regulation of the Pitx-1 gene, which is expressed in various cell types • during certain stages of animal embryonic development. Answer the questions that follow: Promoter Coding Region Pelvis Olfactory Jaw Regulatory Segments ("Switches") a. Which portion of this sequence gets transcribed and translated into a protein? b. Which portion of this sequence underwent a deletion mutation in certain species of freshwater stickleback fish? Did that mutation have an impact on the amino acid sequence of the protein, when it was expressed? С. d. If this switch underwent the same mutation in a turtle embryo, how would the turtle's phenotype be impacted? е. Would this phenotypic change in the turtle likely be adaptive? Briefly explain.arrow_forward1. In the central principal of biology information flows from DNA to RNA to proteins. Briefly describe two points on this flow of information that gene expression can be altered in eukaryotic cells. Answer: Type your answer here.arrow_forwardQ1: If all genes are composed of just four nucleotides, how can different genes carry different types of information? Q2: Would you expect to see more variation in the sequence of DNA bases between two members of the same species (such as humans) or between two individuals of different species (for example, humans and chickens)? Explain your reasoning. Q3: Do different alleles of a gene have the same DNA sequence or different DNA sequences?arrow_forward
- Additionally include a discussion of how the regulation of DNA expression by the proteins that are bound to it and their inheritance influences your understanding of DNA being the material of inheritance.arrow_forwardBriefly explain the transcriptional regulation of mammalian gene expression? Please explain at your own words.arrow_forwarde. You also study the expression of 2 different mutants for this gene. For each mutant answer the following: Does this mutation change the sequence of the protein produced? Why or why not? o If it does change the sequence of protein be sure to write out the new sequence. If it does not change the protein sequence, what effect (if any) would you expect it to have on expression of the gene? 1 20 ORI 40 60 5'..TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGTAATATGGGGATGCACTATC...3’ 3' ...AAGCTCGAGAGCAGCAGCTCTATGCGCTACTATAATGACCATTATACCCCTACGTGATAG...5' promoter i. Mutant A has a single base pair substitution with the T/A being replaced with C/G base pair at position 35 (position denoted by the * in the sequence above).arrow_forward
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