Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 21, Problem 6IQ
Summary Introduction
To explain: About the evolution of lysozyme and α lactalbumin for which the genes for both proteins are found in mammals but not in birds.
Introduction: Amino acids are the building blocks of the body. They are synthesized by specific sequence of nitrogenous bases during translation. These amino acids combine to code for specific proteins that are involved in various biochemical processes.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Domestic dogs are closely related to wolves. Wolves have one copy of the gene that encodes the enzyme amylase. Amylase is required to digest starch. Dogs have between 4 and 30 copies of this gene. Explain how the new copies arose in the genome of the domestic dog. Compare this to the evolution of lactase persistence in humans. Explain how the diet and environment of a dog compared to a wolf would result in fixation of the duplicated gene. What possible explanation is there for the variation of copy number among dog breeds?
In humans, the AMY1 gene produces the enzyme amylase in cells of the salivary glands. Amylase breaks down starch (a polysaccharide) into the sugar maltose (a disaccharide). People from cultures with diets high in starch produce more amylase than people from cultures with diets low in starch because of a mutation in the AMY1 gene. Explain in two to three sentences why the frequency of this AMY1 mutation would have increased in frequency in populations with a high starch diet.
What are the two major hypotheses for the evolutionary history of introns in prokaryotes and eukaryotes? What is the evidence supporting each of these possibilities? What kind of additional evidence, if available, could help resolve this debate?
Chapter 21 Solutions
Study Guide for Campbell Biology
Ch. 21 - In what ways would third-generation sequencing be...Ch. 21 - Prob. 2IQCh. 21 - Refer to the organisms listed in Table 21.1 in...Ch. 21 - Explain why retrotransposons always move by the...Ch. 21 - For each of the following types of DNA sequences...Ch. 21 - Prob. 6IQCh. 21 - Prob. 7IQCh. 21 - If all Hox genes contain the same or very similar...Ch. 21 - About 25% of the human genome relates to the...Ch. 21 - Prob. 2SYK
Ch. 21 - Which of the following has decreased the time and...Ch. 21 - Prob. 2TYKCh. 21 - In the process called gene annotation, computer...Ch. 21 - Prob. 4TYKCh. 21 - Prob. 5TYKCh. 21 - Prob. 6TYKCh. 21 - What is a pseudogene? a. a gene that has been...Ch. 21 - Prob. 8TYKCh. 21 - Which of the following is common to both...Ch. 21 - Prob. 10TYKCh. 21 - Prob. 11TYKCh. 21 - Prob. 12TYKCh. 21 - Prob. 13TYKCh. 21 - Prob. 14TYKCh. 21 - Compared to genes in mice and chimpanzees, most...
Knowledge Booster
Similar questions
- Synpolydactyly is an abnormality characterized by webbing between partially or completely duplicated fingers or toes (Figure 18.15). The same mutations that cause the human phenotype give rise to a similar phenotype in mice. In what family of genes do you think these mutations occur?arrow_forwardComparing DNA sequences in different species indicates that more DNA segments that do not code for protein have been conserved (unchanged) than protein- coding regions. These non-protein-coding regions areinterpreted as gene regulatory elements. Suggest why gene regulatory elements have not undergone many changes during the course of evolution.arrow_forwardGenetic analysis of Mycobacterium leprae, the bacterium that causes leprosy, reveals that its genome has undergone decay over time, losing DNA and acquiring mutations that make some of its genes nonfunctional. What might be some potential reasons for this evolutionary decay of its genome?arrow_forward
- Figure shows a part of the sequence alignment of human and whale myoglobin proteins. Please explain the difference between green- and yellow-colored mutations. Which mutations have higher probability to change the function of protein, why?arrow_forwardHow many globin genes are present in mammals? What is the evidence indicating that all the globin genes in the mammalian genome are part of a family derived from a common ancestral globin gene?arrow_forwardAn analysis of the human genome revealed that some regions of DNA that are highly conserved across species do not code for proteins. Propose an explanation for why these noncoding regions are conserved and what this could mean in terms of evolution.arrow_forward
- Which of the following proteins is thought to have been the first to evolve from an ancestral gene duplication of the most ancient O2 transporting protein in vertebrate hemoglobin (found today in all vertebrates except the agnathan fishes)? A. gamma-globin (-globin) B. epsilon-globin (-globin) C. alpha-globin (-globin) D. delta-globin (-globin) E. zeta-globin (-globin)arrow_forwardIf myoglobin is found in all chordates, urochordates, and cephalochordates, b-globin is found in all vertebrates, a-globin in all ostracoderm descendants, z-globin in all gnathostomes, e-globin in all viviparous mammals, and d-globin in all eutherian mammals, then the most recent globin gene must be: myoglobin, found only in descendants of the chordates, urochordates, and cephalochordates zeta-globin (z-globin), found only in descendants of the ancestral gnathostome fishes epsilon-globin (e-globin), found only in descendants of the ancestral marsupials beta-globin (b-globin), found only in descendants of the ancestral vertebrates delta-globin (g-globin), found only in descendants of the ancestral eutheriansarrow_forwardThe platypus is one of a very small number of mammals that are venomous. Researchers compared the substances in the platypus venom to that of venomous reptiles. They found that the venom in platypus was derived from a protein called defensin, while that in many reptiles was based on a protein called crotamine. The protein structure of these molecules is remarkably similar, though they are controlled by unrelated genes in each taxa. Both molecules originated as non-toxic antimicrobial compounds. Part A: Venom in both platypus and reptiles is an example of: A. Homologous traits B. Analogous traits C. Adaptive radiation D. Genetic drift Part B: A trait matrix for the amniotes is below. Using the trait matrix, match the taxa to the letters at the branch tips. (see attached image) Using the image, match the taxa to the letters at the branch tips 1. Chicken 2. Kangaroo 3. Viviparity 4. Placenta Part C: In which location(s) did each trait evolve on the phylogeny? If more than one location…arrow_forward
- Which of the following best explains the number of similarities between the amino acid sequences of the Drosophila Hedgehog protein and the Chicken Indian Hedgehog protein? O A. The Drosophila hedgehog gene evolved from hedgehogs, which are distantly related to birds. O B. Both genes evolved from a gene present in the last common ancestor of Drosphila and chickens, and the number of differences reflects the amount of time that has elapsed during the evolution of these two lineages. a During the evolution of Drosophila and chickens, a hedgehog like gene arose independently in each lineage, then the gene that arose in chickens diversified. A These genes are unrelated, and the fact that they are similar is only because the proteins need to have similar biochemical properties. They are unrelated because chickens don't have segments and Drosophila larvae don't have limb buds.arrow_forwardHighly conserved genes such as those for ribosomal RNA are present as clearly recognizable relatives in all organisms on Earth; thus, they have evolved very slowly over time. Were such genes “born” perfect?arrow_forward. a. If you found a zinc-finger domain (which facilitates DNA binding) in a newly identified gene,what kinds of hypotheses could you make aboutthe gene’s function?b. Suppose that this newly identified gene shares ahigh percentage of similarity throughout its lengthwith a previously characterized gene in the sameorganism. What does this fact suggest about the origin of the two genes? Would you categorize thesegenes as being: (i) homologous, (ii) paralogous, or(iii) orthologous? (More than one answer may apply.)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