Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
11th Edition
ISBN: 9781488687075
Author: Lisa, A. Urry
Publisher: PEARSON
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Question
Chapter 26.4, Problem 3CC
Summary Introduction
To explain: How a gene could have different functions in different tissues within an organism.
Concept introduction:
Living things are composed of specialized cells, for different functions. However, each cell has same genetic makeup, but the expressions of genes are tissue-specific. There are many regulatory mechanisms that control the expression of a gene. The genetic information in genes is transcribed as messenger RNA (mRNA). The transcribed mRNAs contain non-coding sequences called introns. RNA-splicing is the process that removes the introns present in the mRNA before the instruction for protein synthesis.
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MAKE CONNECTIONS Given that changes in morphologyare often caused by changes in the regulation of geneexpression, predict whether noncoding DNA is likely to beaffected by natural selection. See Concept 18.3 to reviewnoncoding DNA and regulation of gene expression.
. Cite key differences between eukaryotes andprokaryotes that impact gene regulation
Q1: Why is an insertion or a deletion in a gene more likely to alter the protein product than a substitution, such as A for C, would? Q2: Which would you expect to have more impact on an organism: a point mutation as shown here, or the insertion or deletion of a whole chromosome (discussed in Chapter 8)? Q3: Which mechanisms in a cell prevent mutations?
Chapter 26 Solutions
Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
Ch. 26.1 - VISUAL SKILLS: Which levels of the classification...Ch. 26.1 - Prob. 2CCCh. 26.1 - DRAW IT The bear family (Ursidae) is more closety...Ch. 26.2 - Decide whether each of the following pairs of...Ch. 26.2 - Prob. 2CCCh. 26.3 - Prob. 1CCCh. 26.3 - Prob. 2CCCh. 26.3 - WHAT IF? Draw a phylogenetic tree that includes...Ch. 26.4 - Explain how comparing proteins of two species can...Ch. 26.4 - WHAT IF? Suppose gene A is orthologous in species...
Ch. 26.4 - Prob. 3CCCh. 26.5 - What is a molecular clock? What assumption...Ch. 26.5 - Prob. 2CCCh. 26.5 - WHAT IF? Suppose a molecular dock dates the...Ch. 26.6 - Why is the kingdom Monera no longer considered a...Ch. 26.6 - Prob. 2CCCh. 26.6 - MAKE CONNECTIONS Explain how the origin of...Ch. 26 - Humans and chimpanzees are sister species. Explain...Ch. 26 - Why is it necessary to distinguish homology from...Ch. 26 - Prob. 26.3CRCh. 26 - When reconstructing phylogenies, is it more useful...Ch. 26 - Prob. 26.5CRCh. 26 - Prob. 26.6CRCh. 26 - In a comparison of birds and mammals, the...Ch. 26 - To appiy parsimony to constructing a phylogenetic...Ch. 26 - VISUAL SKILLS In Figure 26.4, which similarly...Ch. 26 - Three living species X, Y, and Z share a common...Ch. 26 - VISUAL SKILLS Based on the tree below, which...Ch. 26 - If you were using cladistics to build a...Ch. 26 - VISUAL SKILLS The relative lengths of the frog and...Ch. 26 - EVOLUTION CONNECTION Darwin suggested looking at a...Ch. 26 - SCIENTIFIC INQUIRY DRAW IT (a) Draw a...Ch. 26 - WRITE ABOUT A THEME: INFORMATION In a Short essay...Ch. 26 - SYNTHESIZE YOUR KNOWLEDGE This West Indian manatee...
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- Locate a gene expression data set on Gene Expression Omnibus using "expression by hybridization" involving Rabies virus or related virus Use GEO2R to perform pairwise group analysis Explore and identify the most regulated genes: gene/protein functions of Rabies virusand Define the significance of these genes/proteins in the disease process.arrow_forwardIllustrate about the Map and sequence the genomes of several model organisms used in experimental genetics, including Escherichia coli, Saccharomyces cerevisiae, Caenorhabditis elegans, Drosophila melanogaster, and Mus musculus (mouse).arrow_forward. Complete genome sequences indicate that the humangenome has roughly 27,000 genes, while the worm(nematode) genome has about 22,000 genes. Explainhow the human genome with only about 20% moregenes can encode a creature enormously more complex than the worm.arrow_forward
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