Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 10, Problem 7SQ
Summary Introduction
Introduction: A set of regulatory genes that function together to organize the formation of body pattern during the early development is called as homeotic genes. Homeotic proteins either stimulate or suppress the genes, which may lead to the dislocation of the body parts. These genes code for the transcription factor that has a region called homeodomain and are called as Hox genes that are mostly found in vertebrates.
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Homeotic genes ___.
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a.
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b.
are found only in Drosophila and other arthropods
c.
encode transcription factors that control the expression of genes responsible for specific anatomical structures
d.
are responsible for the programmed cell death occuring during morphogenesis
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down-regulation of the expression of MHC molecules
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both a and b
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none of the above
6. _____ is a DNA sequence.
1.Coactivator
2.Corepressor
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5.Transactivator
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Chapter 10 Solutions
Biology: The Unity and Diversity of Life
Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Gene expression does not vary by ___ . a. cell...Ch. 10 - Binding or ___ to ___ in DNA can increase the rate...Ch. 10 - Muscle cells differ from bone cells because they...Ch. 10 - Prob. 4SQCh. 10 - Mechanisms that govern gene expression do not...Ch. 10 - Prob. 6SQCh. 10 - Prob. 7SQ
Ch. 10 - Prob. 8SQCh. 10 - Which of the following includes all of the others?...Ch. 10 - Prob. 10SQCh. 10 - Prob. 11SQCh. 10 - A cell with a Barr body is ___ . a. a bacterium b....Ch. 10 - Prob. 13SQCh. 10 - Which of the following statements is incorrect? a....Ch. 10 - Prob. 15SQCh. 10 - Explain why somebut not allof an organism's genes...Ch. 10 - Do the same mechanisms that govern gene expression...Ch. 10 - Prob. 3CTCh. 10 - The photos below show flowers from two Arabidopsis...
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- How does gene activation lead to cell differentiation? Explain the correct answer and explain why the others are wrong. A. Different genes are activated in different cells, causing each cell to have a unique funcation B. The same genes are actives in every cell of your body, causing every cell to function the same C. Certain cells only have parts of DNA that causes cell deferentiation D. Unique genes are in different cells, causing each cell to have a unique functionarrow_forwardg protein D. Growth factor receptor ng Tool 0 Q ing C. Growth factor-binding protein D. Growth factor receptor E. Transcription activator A child with retinoblastoma is found to have a 13q14 deletion. The Rb gene, which resides at this locus, produces which kind of tumor-associated protein? A. Cell cycle regulator B. Growth factor ㅂ분 요 9 12 W □ @ 2 C Edit in Paint 8 60 8 Focusarrow_forwardControl over eukaryotic gene expression drives______ . a. transcription factors c. embryonic development b. nutrient availability d. all of the abovearrow_forward
- Muscle cells differ from bone cells because they_______ . a. carry different genes c. are eukaryotic b. express different genes d. are different agesarrow_forwardWhat does this expression mean? DNA → RNA→ Protein A DNA first turns into RNA; then the RNA turns into a protein. B The information in a DNA molecule is used to make an RNA molecule; then the information in the RNA is used to build a protein. C A cell passes through a phase where it has only DNA, then only RNA, then only protein.arrow_forwardHomeotic gene products _______. a. flank a bacterial operon b. map out the overall body plan in embryos c. control the formation of specific body partsarrow_forward
- . A researcher attempts to extract specific cells from a human kidney to regenerate and repair a patient's damaged kidney cells. The type of cells the researcher uses are _____. a totipotent stem cells b adult stem cells c embryonic stem cells d pluripotent stem cellsarrow_forward14. In some types of colon cancer, stem cells have a mutation in the APC gene. What happens if theAPC gene is mutated? 15. Normally, proto-oncogenes stimulate the cell cycle. What are oncogenes and how do they affectthe cell cycle? a. To cause cancer, proto-oncogenes require _________ allele(s) to be mutated andtherefore are considered ____________________. The mutation results in a __________ offunction.16. Normally, tumor suppressor genes inhibit the cell cycle. How do mutated tumor suppressor genesaffect the cell cycle?a. To cause cancer, tumor suppressor genes require _________ allele(s) to be mutated andtherefore are considered ____________________. The mutation results in a __________ offunction.arrow_forwardWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.arrow_forward
- A mutation in the Ras protein could directly affect improper _____ Select one: a. cell signaling leading to alterations in cell division b. cell signaling leading to alterations proteasome activity c. microtubule assembly leading to faulty cell division d. protein degradation during the cell cycle e. protein phosphorylation in the cell cyclearrow_forward5. This diagram illustrates regulation of the Pitx-1 gene, which is expressed in various cell types • during certain stages of animal embryonic development. Answer the questions that follow: Promoter Coding Region Pelvis Olfactory Jaw Regulatory Segments ("Switches") a. Which portion of this sequence gets transcribed and translated into a protein? b. Which portion of this sequence underwent a deletion mutation in certain species of freshwater stickleback fish? Did that mutation have an impact on the amino acid sequence of the protein, when it was expressed? С. d. If this switch underwent the same mutation in a turtle embryo, how would the turtle's phenotype be impacted? е. Would this phenotypic change in the turtle likely be adaptive? Briefly explain.arrow_forwardAnswer the 2 questionsarrow_forward
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