ESSENTIALS OF GENETICS >CUSTOM<
3rd Edition
ISBN: 9781269452403
Author: KLUG
Publisher: Pearson Custom Publishing
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 18, Problem 17PDQ
Annotation of the human genome sequence reveals a discrepancy between the number of protein-coding genes and the number of predicted proteins actually expressed by the genome. Proteomic analysis indicates that human cells are capable of synthesizing more than 100,000 different proteins and perhaps three times this number. What is the discrepancy, and how can it be reconciled?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The human genome contains thousands of sequences known as small open reading frames, some of which encode proteins of about 30 amino acids. What is the minimum number of nucleotides required to encode such a protein?
The DNA-binding domain of each CREB protein subunit recognizes the sequence 5′–TGACGTCA–3′. Due to random chance, how often would you expect this sequence to occur in the human genome, which contains approximately 3 billion base pairs? Actually, only a few doze genes are activated by the CREB protein. Does the value of a few dozen agree with the number of random occurrences expected in the human genome? If the number of random occurrences of the sequence in the human genome is much higher than a few dozen, provide at least one explanation why the CREB protein is not activating more than a few dozen gene Actually, only a few doze genes are activated by the CREB protein. Does the value of a few dozen agree with the number of random occurrences expected in the human genome? If the number of random occurrences of the sequence in the human genome is much higher than a few dozen, provide at least one explanation why the CREB protein is not activating more than a few dozen gene
Not long ago investigators were surprised to learn that more than 95% of a mammalian genome is transcribed, even though less than 2% encodes proteins. What kind of evidence could be used to determine the percentage of the genome that is transcribed?
Chapter 18 Solutions
ESSENTIALS OF GENETICS >CUSTOM<
Ch. 18 -
CASE STUDY | Your microbiome may be a risk factor...Ch. 18 - CASE STUDY|Your microbiome may be a riskfactor for...Ch. 18 -
CASE STUDY | Your microbiome may be a risk...Ch. 18 -
HOW DO WE KNOW?
1. In this chapter, we focused on...Ch. 18 - Review the Chapter Concepts list on page 345. All...Ch. 18 - Prob. 3PDQCh. 18 - Prob. 4PDQCh. 18 - Prob. 5PDQCh. 18 - Prob. 6PDQCh. 18 - Prob. 7PDQ
Ch. 18 -
8. BLAST searches and related applications are...Ch. 18 - Describe the human genome in terms of genome size,...Ch. 18 - Prob. 10PDQCh. 18 -
11. Annotation involves identifying genes and...Ch. 18 - Through the Human Genome Project (HGP), a...Ch. 18 -
13. Describe the significance of the Genome 10K...Ch. 18 - Prob. 14PDQCh. 18 - Prob. 15PDQCh. 18 - Prob. 16PDQCh. 18 -
17. Annotation of the human genome sequence...Ch. 18 - Prob. 18PDQCh. 18 - Prob. 19PDQCh. 18 - Prob. 20PDQ
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
- The genomes of most multicellular eukaryotes encode~25,000 genes, yet their proteomes contain over 200,000proteins. Propose two processes that, taken together, account for this discrepancyarrow_forwardRefer to the DNA sequence provided: 3’ -TACTGAAGCGGCAGCCCCGCATGAGTAGACCTTACT-5’ a. What is the mRNA transcript of the anticoding strand of the DNA model? b. What is the amino acid sequence of the polypeptide chain that will be translated from the mRNA in (a)?arrow_forwardOn the basis of current knowledge, the protein-encoding regions account for only about 3% of the human genome. What is the function of the rest of the DNA?arrow_forward
- The following figure shows a screen shot from the UCSC Genome Browser, focusing on a region of the human genome encoding a gene called MFAP3L. (Note hg38 refers to version 38 of the human genome RefSeq)a. Describe in approximate terms the genomic location of MFAP3L.b. Is the gene transcribed in the direction from the centromere-to-telomere or from the telomere-to-centromere?c. How many alternative splice forms of MFAP3L mRNA are indicated by the data?d. How many different promoters for MFAP3L are suggested by the data?arrow_forwardThe following figure shows a screen shot from the UCSC Genome Browser, focusing on a region of the human genome encoding a gene called MFAP3L. (Note hg38 refers to version 38 of the human genome RefSeq)a. Describe in approximate terms the genomic location of MFAP3L.b. Is the gene transcribed in the direction from the centromere-to-telomere or from the telomere-to-centromere?c. How many alternative splice forms of MFAP3L mRNA are indicated by the data?d. How many different promoters for MFAP3L are suggested by the data? (please do not copy and paste the answer from below. i don't think it is correct. a. MFAP3L is mostly found in the nucleus in the genome. It is found on chromosome 4 reverse strand. The protein produced by the gene is found in the cell membrane, and it is positioned on the membrane with the carboxyl side of the protein facing the cytosol. b. The MFAP3L gene is transcribed from the telomere to the centromere. c. According to the data, there are 11 different splice forms…arrow_forwardThe following figure shows a screen shot from the UCSC Genome Browser, focusing on a region of the human genome encoding a gene called MFAP3L. (Note hg38 refers to version 38 of the human genome RefSeq) a. Describe in approximate terms the genomic location of MFAP3L. b. Is the gene transcribed in the direction from the centromere-to-telomere or from the telomere-to-centromere? c. How many alternative splice forms of MFAP3L mRNA are indicated by the data? d. How many different promoters for MFAP3L are suggested by the data?arrow_forward
- The protein encoded by the cystic fibrosis gene is 1480amino acids long, yet the gene spans 250 kb. How is thisdifference possible?arrow_forwardYou have created three different mutations in the histoneH1 protein (HISmut1, HISmut2, HISmut3), and each of these mutations eliminate a stretch of 5 amino acids from the primary sequence. Based on the description of where you find the mutant histoneH1 proteins when you look inside a cell in each of the cases below, describe 1) what the function is of the amino acids that were removed, and 2) what is not happening with the mutant histoneH1 protein that does happen with wild type H1: 1. HISmut2 protein is found in the cytoplasm, and never in the nucleus. 2. HISmut1 protein is found in only briefly in the cytoplasm because it is very quickly sent to the proteasome. 3. HISmut3 protein is found floating freely throughout the nucleoplasm.arrow_forwardA 2500 bp region of the human genome encodes two genes. One of the genes encodes a protein of 600 amino acids and the other gene encodes a protein of 280 amino acids. The mRNA sequences of the two genes do not contain any of the same nucleotide sequences (i.e. they do not overlap). How is this possible? Fully explain your answer.arrow_forward
- Genome size varies considerably among multicellular organisms. Is this variation closely related to the number of genes and the complexity of the organism? If not, what accounts for some of this variation?arrow_forwardThe length of a particular gene in human DNA, measured from the start site for transcription to the end of the protein-coding region, is 10,000 nucleotides, whereas the length of the mRNA produced from this gene is 4000 nucleotides. What is the most likely reason for this difference?arrow_forwardMutations in the CFTR gene result in cystic fibrosis in humans, a conditions in which abnormal secretions are present in the lungs, pancreas, and sweat glands. The gene was mapped to a 500-kb region on chromosome 7 containing 3 candidate genes. a)Using your knowledge of the disease symptoms, how would you distinguish between the candidate genes to decide which is most likely to encode the CFTR gene? b)How would you prove that your chosen candidate is the CFTR gene?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
Genome Annotation, Sequence Conventions and Reading Frames; Author: Loren Launen;https://www.youtube.com/watch?v=MWvYgGyqVys;License: Standard Youtube License