EP CONNECT ONLINE ACCESS FOR BIOLOGY:
5th Edition
ISBN: 9781260542226
Author: Hoefnagels
Publisher: MCGRAW-HILL HIGHER EDUCATION
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 7, Problem 12WIO
The roundworm C. elegans has 556 cells when it hatches. Each cell contains the entire genome but expresses only a subset of the genes. Therefore, the cells "specialize" in particular functions. List all of the ways that a roundworm cell might silence the unneeded genes.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
You are interested in the effects of mutations on the expression of a human protein-
encoding gene expressed in skin cells. The gene has one intron that is 450
nucleotides long. After this intron is removed from the pre-mRNA, the mRNA
transcript is 1100 nucleotides in length. Diploid somatic cells have two copies of this
gene. Predict the size and amount of mRNA from the cytosol of skin cells, which
were obtained from the following individuals:
• Individual 1: Normal individual with no mutations in this gene.
• Individual 2: Homozygous for a deletion that removes the -10 to -100 region of
the gene that encodes this mRNA.
• Individual 3: Heterozygous in which one gene is normal and the other gene has a
deletion that removes the -10 to -100 region.
• Individual 4: Homozygous for a five-nucleotide deletion in the intron that
removes the GT sequence at the 5' splice site.
Explain your answers.
A gene contains the sequence CGCATACGGTAC that results in the amino acid sequence arg-ile-arg-
tyr. A mutation in this gene has a G inserted after the second C in the strand.
How will this mutation affect the phenotype?
A:This will affect the phenotype because although most of the protein will be identical, the first amino
acid will be different.
B:This will not affect the phenotype because only the second amino acid is different from the original
protein.
C:This will not affect the phenotype because the protein will be identical to the original protein.
D:This will affect the phenotvpe because all of the amino acids after the first one will be different from
he original protein.
Consider Molecule X, which is found in all living cells. This molecule is transcribed from a stretch of DNA in the nucleus. Each nucleobase on the DNA
produces a matching nucleobase on this molecule. Every 3-base codon specifies an amino acid in a protein.
What is the name of X? Your answer should be one word, or a short two- or three-word phrase. Spelling counts.
Note: if there is more than one possible answer, separate each answer with a comma.
x
5
Chapter 7 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY:
Ch. 7.1 - How did Griffiths research, coupled with the work...Ch. 7.1 - How did the Hershey-Chase blender experiments...Ch. 7.2 - What are the components of DNA and its...Ch. 7.2 - What evidence enabled Watson and Crick to decipher...Ch. 7.2 - Prob. 3MCCh. 7.3 - What is the relationship between a gene and a...Ch. 7.3 - Prob. 2MCCh. 7.3 - What are the three types of RNA, and how does each...Ch. 7.4 - What happens during each stage of transcription?Ch. 7.4 - Where in the cell does transcription occur?
Ch. 7.4 - What is the role of RNA polymerase in...Ch. 7.4 - What are the roles of the promoter and terminator...Ch. 7.4 - How is mRNA modified before it leaves the nucleus...Ch. 7.5 - How did researchers determine that the genetic...Ch. 7.5 - What happens in each stage of translation?Ch. 7.5 - Where in the cell does translation occur?Ch. 7.5 - How are polypeptides modified after translation?Ch. 7.6 - What are some reasons that cells regulate gene...Ch. 7.6 - Prob. 2MCCh. 7.6 - Prob. 3MCCh. 7.6 - Prob. 4MCCh. 7.7 - What is a mutation?Ch. 7.7 - What are the types of mutations, and how does each...Ch. 7.7 - Prob. 3MCCh. 7.7 - Prob. 4MCCh. 7.7 - How are mutations important?Ch. 7.8 - What question about the FOXP2 gene were the...Ch. 7.8 - What insights could scientists gain by...Ch. 7 - A nucleotide is composed of all of the following...Ch. 7 - Prob. 2MCQCh. 7 - Transcription copies a _______ to a complementary...Ch. 7 - Choose the DNA sequence from which this mRNA...Ch. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - How does the lac operon regulate lactose digestion...Ch. 7 - Prob. 8MCQCh. 7 - Prob. 9MCQCh. 7 - Prob. 10MCQCh. 7 - Explain how Griffiths experiment and Avery,...Ch. 7 - Prob. 2WIOCh. 7 - Prob. 3WIOCh. 7 - Put the following in order from smallest to...Ch. 7 - Prob. 5WIOCh. 7 - List the three major types of RNA and their...Ch. 7 - Some people compare DNA to a blueprint stored in...Ch. 7 - Prob. 8WIOCh. 7 - Prob. 9WIOCh. 7 - If a protein is 1259 amino acids long, what is the...Ch. 7 - Prob. 11WIOCh. 7 - The roundworm C. elegans has 556 cells when it...Ch. 7 - A protein-encoding region of a gene has the...Ch. 7 - Explain how a mutation in a protein-encoding gene,...Ch. 7 - Refer to the figure to answer these questions: a....Ch. 7 - Describe the mutation shown in figure 7.27 and...Ch. 7 - Prob. 17WIOCh. 7 - Parkinson disease causes rigidity, tremors, and...Ch. 7 - Refer to figure 7.28 and the chapter con tent to...Ch. 7 - Prob. 2PITCh. 7 - Prob. 3PITCh. 7 - Prob. 4PIT
Additional Science Textbook Solutions
Find more solutions based on key concepts
Describe Mendels conclusions about how traits are passed from generation to generation.
Concepts of Genetics (12th Edition)
Explain why hyperthermophiles do not cause disease in humans.
Microbiology with Diseases by Taxonomy (5th Edition)
Why do scientists think that all forms of life on earth have a common origin?
Genetics: From Genes to Genomes, 5th edition
What were the major microbiological interests of Martinus Beijerinck and Sergei Winogradsky? It can be said tha...
Brock Biology of Microorganisms (15th Edition)
Consider the experiment described in Section 2.1 in which Ted Garland and colleagues bred mice to run long dist...
Evolutionary Analysis (5th Edition)
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
- 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_forwardList the following steps of gene expression in eukaryotes in chronological order. Also indicate which events take place in the nucleus and which take place in the cytoplasm. RNA processing, transcription, translation, RNA breakdown into nucleotidesarrow_forwardI am confused about how stem cell transplants works. If you put a semi differentiated tadpole nucleus in a denucleated egg cell, it’ll develop into a fully formed tadpole, but if you put a fully differentiated tadpole nucleus, it won’t (because the genes have already been expressed in a way where the cytoplasmic determinants cannot operate to the fullest). Then how come in stem cell transplants, you use adult nucleuses that are already developed and transplant them into the denucleated egg cells?arrow_forward
- a) b) c) d) Spongebob's dream is to become like Larry the lobster, a strong, handsome bodybuilder. He tries going to the gym but only ends up breaking his whole upper limb. After healing, he decides to start taking steroids. His muscles increase proportionately in size to the point of him dying. How do steroids bind and signal and what could be a reason he died? Surface; transcription of wrong gene expression Surface; Altering function of proteins for the worse Intracellular; Altering function of proteins for the worse Intracellular; transcription of wrong gene expressionarrow_forwardMany aspects of gene function can be nicely explained with the one- gene-one-enzyme hypothesis, which states that a gene controls the production of an enzyme. Which of the following findings about gene expression, though, requires an expansion of this simple concept? Non-enzyme proteins are made from genes too. Some genes code for RNA molecules only. Enzymes composed of different polypeptides are coded for by more than one gene. a and c, but not b a, b, and carrow_forwardA geneticist uses a generic engineering approach to mutate the TATA-building protein (TBP) of a murine cell line that ordinarily produces high amounts of the LNS protein. The mutation prevents the binging of the TBP to the TATA box. What would be the effect on the cell line that possesses the mutation, especially LNS protein levels?arrow_forward
- A lab wants to convert a skin cell back into an embryonic stem cell (to create what is known as an induced pluripotent stem cell). They transform a set of transcription factors into the skin cell in hopes of accomplishing this. Discussion Question 1: Once you have transformed these factors into your skin cell, how might you identify your induced pluripotent stem cells? List three characteristics you could look for.arrow_forwardWhich specialized gene product is responsible for the fusion of mononucleated skin fibroblasts into multinucleated skeletal muscle cells in humans (a type of positive feedback in gene expression)? the glucocorticoid receptor protein the antennapedia protein the PAX-6 protein the MyoD protein the Ey proteinarrow_forwardMany aspects of gene function can be nicely explained with the one-gene-one-enzyme hypothesis, which states that a gene controls the production of an enzyme. Which of the following findings about gene expression, though, requires an expansion of this simple concept? Choose an answer below: Non-enzyme proteins are made from genes too. Some genes code for RNA molecules only. Enzymes composed of different polypeptides are coded for by more than one gene. a and c, but not b a, b, and carrow_forward
- In the novel Chromosome 6, by Robin Cook, a biotechnology company genetically engineers individual bonobos (a type of chimpanzee) to serve as future organ donors for clients. The genes of the bonobos are altered so that no tissue rejection takes place when their organs are transplanted into a client. What genes would need to be altered for this scenario to work? Explain your answer.arrow_forwardHow might a point mutation in DNA affect the phenotype. How the genome is expressed in the organism? (Please explain this at the molecular level).arrow_forwardYour friend can't understand how it is possible to combine a somatic cell from their pet with an oocyte from a different animal and create a clone of their pet. Won't the animal that develops be the offspring of the two animals rather than a clone of the animal that donated the somatic cell? Explain to your friend why this is not the case.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:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & 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 & CompanyLaboratory 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
QCE Biology: Introduction to Gene Expression; Author: Atomi;https://www.youtube.com/watch?v=a7hydUtCIJk;License: Standard YouTube License, CC-BY