Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 23, Problem 2PDQ
Summary Introduction
To determine: The role of differential transcription, gene control of cells fate, and the role of signaling in development.
Introduction: During the developmental process, cell achieves a variety of structural and function specializations, which results in differential gene expression. Developmental processes are controlled by the cascade of gene expression.
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Chapter 23 Solutions
Concepts of Genetics (12th Edition)
Ch. 23 - Suppose you initiate a screen for maternal-effect...Ch. 23 - Prob. 2NSTCh. 23 - Prob. 1CSCh. 23 - Prob. 2CSCh. 23 - Prob. 1PDQCh. 23 - Prob. 2PDQCh. 23 - Prob. 3PDQCh. 23 - Nuclei from almost any source may be injected into...Ch. 23 - Distinguish between the syncytial blastoderm stage...Ch. 23 - Prob. 6PDQ
Ch. 23 - Prob. 7PDQCh. 23 - List the main classes of zygotic genes. What is...Ch. 23 - Experiments have shown that any nuclei placed in...Ch. 23 - Prob. 10PDQCh. 23 - Prob. 11PDQCh. 23 - Prob. 12PDQCh. 23 - Prob. 13PDQCh. 23 - Prob. 14PDQCh. 23 - Prob. 15PDQCh. 23 - Prob. 16PDQCh. 23 - Prob. 17PDQCh. 23 - A number of genes that control expression of Hox...Ch. 23 - The apterous gene in Drosophila encodes a protein...Ch. 23 - In Arabidopsis, flower development is controlled...Ch. 23 - Prob. 21ESPCh. 23 - Prob. 22ESPCh. 23 - Much of what we know about gene interactions in...Ch. 23 - Dominguez et al. (2004) suggest that by studying...
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- Developmental abnormalities can result from: 1. Under expression of some genes 2. All of these choices are correct 3. Inappropriate interaction among gene products that were expressed in the wrong amounts and wrong time 4. Over expression of some genes 5. corrupted timing of the normal time genes are expressedarrow_forwardExplain hoxA3 and HoxD3 genes are nearly equivalent yet they play distinct roles in the development of mouse.arrow_forwardCan I get help on creating a concept map for the Introduction provided below? The development of a multicellular organ (such as the brain) from stem cells involves complicated processing.1,2 Proliferating stem cells undergo the fate decision process before developing into tissues or organs. This process is controlled and regulated by a signaling pathway network (called gene regulatory network).3 The network comprises pathways created by the intrinsic and extrinsic factors of the cells, which form the signal transduction to control stem cell fate. There are various signal pathways that have been discovered and studied for tissue development and patterning, including Wnt signaling,4 Notch, and receptor tyrosine kinase.5–7 It has been suggested that cross-regulatory interactions between elements of the pathways (e.g., Wnt and Notch) affect the process of cell fate assignment.8,9 Most components of Wnt signaling have multiple interactions with other signaling pathways (e.g., Hippo/YAP and…arrow_forward
- provide one example from the Drosophila AP toolkit for "Toolkit genes can be classified according to the phenotypes caused by their mutation. Similar mutant phenotypes often reflect genes that function in a single developmental pathway. Distinct pathways exist for the generation of body axes, for example, and for the formation and identity of fields."arrow_forwardThe following choices are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. The dorsal lip of blastophore influences the formation of the neural tube and the flanking mesoderm. What concept? Question #2. The outermost part of the cup-shaped embryo is destined to form the nervous system and the skin. What concept?arrow_forwardThe following are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. During the cleavage stage, the masked messenger RNA from the developing oocyte controls the cleavage patterns. During the blastula stage, specific genes are activated; hence there is appearance of new proteins. What concept? Question #2. Catfish collected in the polluted waters of Pampanga River were found to have ruptured and vascularized brain. What concept? Question #3. Stem cell technology is based on the principle that an undifferentiated cell is totipotent. What concept?arrow_forward
- The following are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. A committed cell follows strictly its developmental pathway no matter what. What Concept? Question #2. A lot of our nerve cells degenerate so that the nuerotropic factors which is critical survival factor would be enough to sustaint he development of the entire organism. What concept? Question #3. The paternal and maternal genes. What concept?arrow_forwardName three possible factors contributing to early asymmetries in a developing embryo (i.e. what are the kinds of things early on that lead to the development of the body axes - dn, a/p, l/r, etc)? In the fruit fly drosophila melanogaster, the anterior-to-posterior body axis becomes segmented into distinct regions. explain the role of the genes bicoid and nanos in this process.arrow_forwardExpression of a homeotic gene in the wrong tissue in Drosophila results in the development of an inappropriate body part from that tissue. Explain why this happens and how it shows that homeotic genes are positive regulators of developmental pathways.arrow_forward
- Another way to study the role of proteins (e.g., transcription factors) that function in development is to microinject the mRNA that encodes a protein, or the purified protein itself, into an oocyte or embryo, and then determine how this affects the subsequent development of the embryo, larva, and adult. For example, if Bicoid protein is injected into the posterior region of an oocyte, the resulting embryo will develop into a larva that has anterior structures at both ends. Based on your understanding of the function of each developmental gene, what would be the predicted phenotype if the following proteins or mRNAs were injected into normal oocytes? A. Nanos mRNA injected into the anterior end of an oocyte B. Antp protein injected into the posterior end of an embryo C. Toll mRNA injected into the dorsal side of an early embryoarrow_forwardWhat are morphogens? Explain how they influence tissue patterning during embryonic development. Describe TWO specific examples to support your explanation.arrow_forwardThe following choices are various developmental phenomena relating to the concepts and principles in developmental biology. A. Concept of apoptosis B. Concept of prefomed guidelines C. Concept of programmed gene action D. Concept of capacity E. Concept of fate F. Concept of environmental influences G. Concept of induction H. Concept of progressively formed guidelines I. Concept of Differentiation J. Concept of guidelines K. Concept of Gradient L. Concept of differentiation Question #1. The blastomeres can become any cell of the body. What concept? Question #2. The limb bud consists of different cells which give rise to the limb. What concept?arrow_forward
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