Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 32.1, Problem 1CC
Summarize the main stages of animal development. What family of control genes plays a major role?
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Discuss the role of homeotic genes in development. Explain what happens to the phenotype of a fruit fly when a gain-of-function mutation in a homeotic gene causes the protein to be expressed in an abnormal region of the embryo. What are the consequences of a loss-of-function mutation in such a gene?
Give examples of genes that affect development in fruit flies by regulating gene expression at the level of (a) transcription and (b) translation.
indicate the stage at which segmentation genes, homeotic genes, and egg-polarity genes would have an effect on development.
Chapter 32 Solutions
Campbell Biology: Custom Edition
Ch. 32.1 - Summarize the main stages of animal development....Ch. 32.1 - WHAT IF? What animal characteristics would be...Ch. 32.2 - Put the following milestones in animal evolution...Ch. 32.2 - VISUAL SKILLS Explain what is represented by the...Ch. 32.2 - MAKE CONNECTIONS Evaluate whether the origin of...Ch. 32.3 - Distinguish the terms grade and clade.Ch. 32.3 - Compare three aspects of the early development of...Ch. 32.3 - Prob. 3CCCh. 32.4 - Prob. 1CCCh. 32.4 - WHAT IF? Suppose ctenophores are basal metazoans...
Ch. 32.4 - Prob. 3CCCh. 32 - Prob. 32.1CRCh. 32 - What caused ihe Cambrian exploston? Describe...Ch. 32 - Describe how body plans provide useful Information...Ch. 32 - Prob. 32.4CRCh. 32 - Prob. 1TYUCh. 32 - The distinction between sponges and other animal...Ch. 32 - Prob. 3TYUCh. 32 - Prob. 4TYUCh. 32 - EVOLUTION CONNECTION A professor begins a lecture...Ch. 32 - SCIENTIFIC INQUIRY INTERPRET THE DATA Redraw the...Ch. 32 - WRITE ABOUT A THEME: INTERACTIONS Animal life...Ch. 32 - SYNTHESIZE YOUR KNOWLEDGE This organism is an...
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- Carefully distinguish between the terms differentiation and determination. Which phenomenon occurs initially during development?arrow_forwardWhich of the following is an example of autonomous specification? Multiple Drosophila nuclei division without cellularization of blastomeres Destroying one half of a 2 cell stage Xenopus embryo and subsequent loss of half the embryological structures Differentiation concentration of paracrine factors within the embryo cytoplasm Separation of sea urchin blastomeres resulting in individual pluteus larva development O o oarrow_forwardBriefly summarize the article belowarrow_forward
- Which of the following best describes the concept of cell differentiation during the development of a multicellular organism? A. During development, all of the genes in the embryo's cells are expressed at first, but fewer and fewer are expressed as time proceeds. B. During development, different sets of genes are deleted from different cell types so that at the end of development, each cell has only the genes it needs. C. During development, different cells become specialized to have different phenotypes even though they all originated from the same cell. ..arrow_forwardExplain why knowing how gene expression occurs is important in understanding developmentarrow_forwardWhich of the following is an example of conditional specification? Multiple Drosophila nuclei division without cellularization of blastomeres Destroying one half of a 2 cell stage Xenopus embryo and subsequent loss of half the embryological structures Separation of sea urchin blastomeres resulting in individual pluteus larva development Differentiation concentration of paracrine factors within the embryo cytoplasmarrow_forward
- Which of the following mechanisms could negatively impact embryo development in humans? a mutation in a master regulator transcription factor needed for prefrontal cortex cell formation the introduction of a toxin that alters the genetic regulatory cascade for ovary development proper functioning of morphogens a failure of apoptosis to target the cells that formed "webbing" between the fingers and toes A, B, and D Which of the following likely has the most Hox genes? Jellyfish Slugs Dolphins ) Bees Similar gill pouches in embryos of a chick, human, and cat are an example of ) structural homology ) developmental homology ) genetic homology ) the inheritance of acquired charactersarrow_forwardWhat is redeployment in developmental biology?arrow_forwardDefine what Morphogenesis is. And then provide an example that shows how morphogenesis is relevant to developmental biology. Please make the description/example very detailed.arrow_forward
- If we Remove transcription in the development equation, will an organism continue to exist?arrow_forwardDistinguish between genetic and epigenetic influences on development.arrow_forwardDescribe the molecular features of the homeobox and homeodomain. Explain how these features are important in the function of homeotic genes.arrow_forward
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