Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 32, Problem 13PIAT
Gene expression patterns can be used to test hypotheses based on morphology. For example, the regulatory gene Bapxl is expressed in the hinge of the developing lower jaw in fishes and reptiles. Where would you predict Bapxl expression to occur in mammals?
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Chapter 32 Solutions
Biological Science (6th Edition)
Ch. 32 - True or false? Both echinoderms and vertebrates...Ch. 32 - 2. What trait(s) define(s) the vertebrates?
a....Ch. 32 - The two major lineages that make up the living...Ch. 32 - Most species of hominins are known only from...Ch. 32 - Mammals and birds are both endothermic. Which...Ch. 32 - MODEL Sketch a simple model of a generic chordate...Ch. 32 - 7. There is some evidence that pharyngeal slits...Ch. 32 - MODEL Draw a phylogeny of modem humans that would...Ch. 32 - 9. Consider the evolution of protostomes (Chapter...Ch. 32 - 10. MODEL Genetic diversity in living human...
Ch. 32 - Prob. 11PIATCh. 32 - CAUTION How is the opossum related to you? a. An...Ch. 32 - 13. Gene expression patterns can be used to test...Ch. 32 - 14. PROCESS OF SCIENCE Researchers studied mice...Ch. 32 - 15. The image of the opossum skull shows that the...Ch. 32 - Evolution often results in the co-option of a...
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- In flies, the gap gene kruppel is expressed in a broad band in the middle of the embryo with giant expressed as its anterior border and knirps at its posterior border. How is the expression of kruppel limited to this band in the embryo? Describe the spatial regulation of the kruppel gene.arrow_forwarda. Explain how you could use worms transformedwith myo-2::GFP to find mutations that disrupt thestructure of the pharynx. How would the presenceof the transgene facilitate the mutant screen?b. Nematodes homozygous for loss-of-function mutations in a gene called pha-4 have no detectablepharyngeal structures. How could you use myo2::GFP to determine if pha-4 is a master regulatory gene that directs development of the pharynxin a manner similar to the way Pax-6/eyeless controls eye development?arrow_forwardWhich of the following statements about Tbx5 is true? a. Tbx5, Tbx4, and AmphiTbx4/5 have very similar coding regions. b. Tbx5 is involved in tail development in vertebrates. c. Tbx5, Tbx4, and AmphiTbx4/5 have very similar regulatory regions. d. Tbx5 initiates hindlimb development.arrow_forward
- As shown in Figure 13-26, the Sonic hedgehog gene is expressed in many places in a developing chicken. Is theidentical Sonic hedgehog protein expressed in each tissue? If so, how do the tissues develop into different structures? If not, how are different Sonic hedgehog proteinsproduced?arrow_forwardThe homeotic mutation Antennapedia causes mutant Drosophila to have legs in place of antennae and is a dominant gain-of-function mutation. List all the properties of such mutations. How does the Antennapedia gene change antennae into legs?arrow_forwardExposing C. elegans to an RNAi molecule homologous to a non-protein-coding RNA gene resulted in the worms’ inability to respond to touch. What predictions could you make about the function of that gene in development?arrow_forward
- Pax6 is a gene that is involved in mammalian eye development. Mutations in this gene result in a lack of iris in humans, and mice that are homozygous for the mutation lack eyes completely. Mutations in the eyeless gene in the fruitfly Drosophila result in reduced eyes. Expressing Pax6 from mammals in other tissues of Drosophila during its embryonic development can result in an ectopic eye (e.g. an eye expressed in a different tissue type). An example of an ectopic eye on the antenna of Drosophila is shown below. Part A: The eye of humans, mouse, and fly are an example of the following (check all that apply) A. Structural analog B. Structural homolog C. Developmental homolog D. Genetic homolog Part B: Darwin's hypothesis of natural selection has two components: Species are not static but change through time Species are related, and not independent. In what ways does the human, mouse, and fly eye support or contradict one or both of the two components of…arrow_forwardYou isolate a glp-1 mutation of C. elegans and discover that the DNA region encoding the spatial control region (SCR) has been deleted. What will the GLP-1 protein expression pattern be in a four-cell embryo in mutant heterozygotes? In mutant homozygotes?arrow_forwardPerson A express a gene can regulate the expression of multiple language gene. What could be the probable protein/enzyme that the gene could code for? How could the enzyme regulate gene expression?arrow_forward
- Expression levels of GeneA and GeneB were measured in 10 cell lines. The researcher would liketo know if expression levels of GeneA and GeneB are related. If level of GeneB is a function of GeneA, what could this mean in terms ofbiological mechanisms?arrow_forwardWhen during the development of most mammals is lactose available for use by E. coli in the gut? How does the availability of lactose to E. coli in humans differ from that seen in other mammals?arrow_forwardDescribe an experiment you could perform or evidence you could observe that would prove that DNA is the genetic material that results in inheritance of traits (through gene expression) in a multicellular animal.arrow_forward
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QCE Biology: Introduction to Gene Expression; Author: Atomi;https://www.youtube.com/watch?v=a7hydUtCIJk;License: Standard YouTube License, CC-BY