Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433769
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 18, Problem 2TYU
Summary Introduction
Introduction:
Homeotic gene is a gene used in regulation of various anatomical structures in organisms. It regulates growth of anatomical structure. Homeotic genes and other genes contain the homeobox domains which maintain the polarity of the cells, which means they help in the establishment of the anterior-posterior polarity or dorsal ventral polarity of cells.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following statement(s) is/are true with regard to positional information in Drosophila?
A. Morphogens are a type of molecule that conveys positional information.
B. Morphogenetic gradients are established only in the oocyte, prior to fertilization.
C. Cell adhesion molecules also provide a way for a cell to obtain positional information.
a. The eyeless gene is required for eye formation in Drosophila. It encodes a homeodomain. What would you predict about the biochemical function of the Eyeless protein?b. Where would you predict that the eyeless gene is expressed in development? How would you test your prediction? c. The Small eye and Aniridia genes of mice and humans, respectively, encode proteins with very strong sequence similarity to the fly Eyeless protein, and they are named for their effects on eye development. Devise one test to examine whether the mouse and human genes are functionally equivalent to the fly eyeless gene.
Developmental genes are often highly conserved. However, organisms with very similar genes can appear quite different. How is this possible?
A. The genes may usually undergo mutation during development, resulting in the production of varied proteins in individual cells.
B. If an identical gene is turned on at different stages in development, it can have very different effects.
C. Even if genes are quite similar, they always produce proteins with different functions.
D. If the genes are very similar, they must always be expressed similarly (at similar times in development) but may sometimes still have varying effects.
Chapter 18 Solutions
Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
Ch. 18.1 - Prob. 1CCCh. 18.2 - Prob. 1CCCh. 18.2 - Explain the advantage of the systems biology...Ch. 18.2 - Prob. 3CCCh. 18.3 - The best estimate is that the human genome...Ch. 18.3 - Prob. 2CCCh. 18.3 - Prob. 3CCCh. 18.4 - Discuss the characteristics of mammalian genomes...Ch. 18.4 - Which of the three mechanisms described in Figures...Ch. 18.4 - Prob. 3CC
Ch. 18.5 - Describe three examples of errors in cellular...Ch. 18.5 - Prob. 2CCCh. 18.5 - Prob. 3CCCh. 18.6 - Would you expect the genome of the macaque (a...Ch. 18.6 - Prob. 2CCCh. 18 - Prob. 1TYUCh. 18 - Prob. 2TYUCh. 18 - Two eukaryotic proteins have one domain in common...Ch. 18 - SCIENTIFIC INQUIRY The scientists mapping human...Ch. 18 - FOCUS ON EVOLUTION Genes important in the...Ch. 18 - FOCUS ON INFORMATION The continuity of life is...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE Insects have three...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following correctly explains how gene expression can change in a differentiating cell in an animal embryo?A. DNA methylation triggered by apoptosis leads to suppression of some genes and expression of others.B. Presence of germ layers trigger hormonal release from endocrine glands, signaling to certain cells to express genes.C. Cell signals through plasmodesmata allow coordination of cellular activities and cell differentiation.D. Cues from the cytoplasm and from surrounding cells can induce changes in gene expression.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_forwardWhat is the difference between a maternal-effect gene and a zygotic gene? Of the following genes that play a role in Drosophila development, which are maternal-effect genes and which are zygotic? Explain your answer. A. nanos B. Antp C. bicoid D. labarrow_forward
- Which of the following does not accurately describe eukaryotic transcriptional factors? a. Changes in transcriptional factor express can lead to changes in development. b. Most can regulate multiple different genes. c. They are each specific to one gene. d. Expression of different transcription factors leads to differentiation of cells.arrow_forwardSignal transduction pathways are important mechanisms for cell-to-cell communication in multicellular organisms. How do the target cells typically respond when they receive signals from neighboring cells during very early stages of embryo development? A. The target cells move to one of the poles to establish the anterior-posterior body axis. B. The target cells undergo changes in gene expression, sending them down a specific developmental path. C. The target cells stop dividing so the neighboring cells have time to get to the same stage of development. D. The target cells activate a collection of miRNAs to accelerate transcription and cell division.arrow_forwardWhen comparing gene expression of the cells of the ICM and those of the trophoblast, which of the following is TRUE? a. Cells of the trophoblast express Nanog. b. Cells of the ICM and trophoblast will show the same gene expression pattern. c. ICM cells express Cdx2. d. Cells of the ICM express Oct 4arrow_forward
- In flies developing from eggs laid by a nanos−mother, development of the abdomen is inhibited.Flies developing from eggs that have no maternallysupplied hunchback mRNA are normal. Flies developing from eggs laid by a nanos− mother that alsohave no maternally supplied hunchback mRNA arenormal. If too much Hunchback protein accumulatesin the posterior of the egg, abdominal developmentis prevented.a. What do these findings say about the function ofthe Nanos protein and of the hunchback maternallysupplied mRNA?b. What do these findings say about the efficiency ofbiological processes that are subject to evolution?arrow_forwardFor the Igf2 gene, where do de novo methylation and maintenancemethylation occur?a. De novo methylation occurs in sperm, and maintenancemethylation occurs in egg cells.b. De novo methylation occurs in egg cells, and maintenancemethylation occurs in sperm cells.c. De novo methylation occurs in sperm, and maintenancemethylation occurs in somatic cells of offspring.d. De novo methylation occurs in egg cells, and maintenancemethylation occurs in somatic cells of offspring.arrow_forwardSuppose expression of gene A is limited to the middle part of the early mouse embryo. Expression of gene B is located on the posterior and anterior ends of the early mouse embryo, but not in the middle. When gene B is mutated, expression of gene A is distributed over the whole embryo. What is a likely explanation for this data? a) Gene A acts as an activator of gene B. Ob) Gene A acts as a repressor of gene B. O c) Gene B acts as an activator of gene A. () d) Gene B acts as a repressor of gene A.arrow_forward
- You are studying Hox genes in crane flies (Leptotarsus testaceus). The cranefly genome is sequenced, and in craneflies. Using your understanding of Hox genes, design an experiment testing where the homolog of the EVE gene is expressed in cranefly embryos. you have access to this sequence. You are interested in studying the EVE genearrow_forwardProlactin is a protein hormone that, among other things, enables mammals to produced milk. Prolactin is secreted from cells in the pituitary gland in response to eating, mating, ovulation, and nursing. a. Prolactin is encoded by the PRL A segment of the PRL gene and its regulatory regions are shown below. The +1 site (*) and part of the promoter (#) of PRL are indicated. What is the PRL mRNA transcribed from the PRL gene? 5'-AAGCCGACCGGATATACGACGCCATGAACATGACAGGATCGCCATGG-3' 3'-TTCGGCTGGCCTATATGCTGCGGTACTTGTACTGTCCTAGCGGTACC-5' #### * b. What is the 5'-UTR of PRL? c. Using the mRNA you transcribed in part a, what are the first 8 amino acids of prolactin that are translated? cis face trans face MTOC Rough ER Golgi complex Cell membrane c. In what organelle is prolactin glycosylated? What motor protein would be used to transport prolactin from the rough ER to this organelle? d. Where does exocytosis occur? What motor protein would be used to transport prolactin from the site of its…arrow_forwardDraw a diagram to illustrate how a concentration gradient of a transcription factor along the anterior-posterior axis of a Drosophila embryo can create a region in the middle in which transcription of a target gene takes place without being transcribed in either the anterior or posterior region.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY