Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 18, Problem 10SQ
Molecular clocks are based on comparisons of the number of ______ mutations between species.
- a. lethal
- b. neutral
- c. conservative
- d. nonconservative
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Luria & Delbruck's fluctuation test demonstrated that _________________.
a.mutations are spontaneous & pre-existing at low frequency within populations
b.transition mutations occur early in the growth of a population
c.mutations induced as adaptations in response to the environment
d.transversion mutations occur late in the growth of a population
e.resistance to phage T1 a physiological state induced by the presence of the phage
By comparing DNA sequence of a specific gene, we can determine the evolutionary relationship of two organisms. Based on the sequence listed below, which two species would you expect to be more closely related? Organism No.1 with ATG CAA TAC GCC, organism No. 2 with ATG CAT GAC ACC and organims No. 3 with ATG CAT TAC GCC
A. Organims No.2 and No.3 are likely more closely related.
b.Organims No.1 and No.2 are likely more closely related.
c.Organims No 1 and No.3 are likely more closely related.
A researcher compares several species of maple tree by examining the amino acid sequence of a protein. The researcher discovers that the amino acid sequence differs in three locations depending on the species of tree. What can the researcher conclude based on this data?
A.
Maple trees are evolving rapidly.
B.
The different species have different morphological characteristics.
C.
The maple trees have been exposed to high levels of mutagens.
D.
The genetic makeup of the maple tree population has changed over time.
Chapter 18 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 18 - In cladistics, the only taxon that is always...Ch. 18 - Prob. 2SQCh. 18 - A clade is _________. a. defined by a derived...Ch. 18 - Prob. 4SQCh. 18 - In cladograms, sister groups are _______ . a....Ch. 18 - Through _______, a body part of an ancestor is...Ch. 18 - Homologous structures among major groups of...Ch. 18 - Prob. 8SQCh. 18 - Mitochondrial DNA sequences are often used in...Ch. 18 - Hawaiian Honeycreeper Phylogeny The Poouli...
Ch. 18 - Prob. 2DAACh. 18 - Hawaiian Honeycreeper Phylogeny The Poouli...Ch. 18 - Hawaiian Honeycreeper Phylogeny The Poouli...Ch. 18 - Molecular clocks are based on comparisons of the...Ch. 18 - True or false? DNA barcoding can identify an...Ch. 18 - A mutation that alters the embryonic expression...Ch. 18 - All of the following data types can be used as...Ch. 18 - True or false? Phylogeny helps us study the spread...Ch. 18 - Prob. 15SQCh. 18 - In the late 1800s, a biologist studying animal...Ch. 18 - The photos shown above illustrate a case of...
Additional Science Textbook Solutions
Find more solutions based on key concepts
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science (6th Edition)
Single penny tossed 20 times and counting heads and tails: Probability (prediction): _______/20 heads ________/...
Laboratory Manual For Human Anatomy & Physiology
How does the removal of hydrogen atoms from nutrient molecules result in a loss of energy from the nutrient mol...
SEELEY'S ANATOMY+PHYSIOLOGY
4. 38 Strontium has four naturally occurring isotopes, with mass numbers 84, 86, 87, arid 88.
a. Write the atom...
General, Organic, and Biological Chemistry: Structures of Life (5th Edition)
The validity of a scientific law.
Physical Universe
An obese 55-year-old woman consults her physician about minor chest pains during exercise. Explain the physicia...
Biology: Life on Earth with Physiology (11th 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
- Which of the following organisms would be the most likely to have identical copies of the Alu sequence, repeated thousands of times in its genome? A. the Japanese pufferfish B. Escherichia coli C. the chimpanzee D. Fugu rubripes E. the mousearrow_forwardWhen we compare DNA sequences among individuals, we tend to see lots or differences In non-coding regions of the genome but very few differences in coding regions, particullarly at second codon position in exons. What explains these different levels of nucleotide diversity? A. Selection on coding regions B. Selection on non-coding regions C. Different mutation rates in coding and non-coding regions D. Protien folding patterns E. all the abovearrow_forwardWhich of the following is not true of a single nucleotide polymorphism?a. It is usually caused by a translocation mutation.b. It is usually caused by a nucleotide substitutionmutation.c. It may change the phenotype of an organism.d. It is inherited from parent to offspring.arrow_forward
- The basic units of information that encode the proteins needed to grow and function as a living organism are called: Select one: a. Chromosomes O b. Genes c. Mutations O d. Cells O e. Mendel's postulatesarrow_forwardIn humans, mutations can be the result of _________________. * A. racial discrimination B. political intervention C. exposure to harmful level of radiation D. migration pattern 2. Which of the following causes a decreasing wildlife population in most of the places in our country? * A. loss of limiting factor B. loss of natural disturbances C. loss of habitat D. loss of carrying capacityarrow_forwardThe above image compares portions of DNA containing globin genes from an ordinary bony fish and an icefish. The genes on the figure are aligned based on - A. the beginning sequence on the chromosome. B. a matching of intron sequences. C. homologous sequences. D. gene function.arrow_forward
- The experimental insertion of a fragment of frog DNA into a bacterial plasmid produces a(n) ________ molecule; if this fragment contains a gene, the process is most accurately referred to as ________. a.recombinant; gene cloning b. diploid; splicing c. Hybrid; fusion d.Eukaryo-bacterial; genetic engineering e. Mutant; biosynthesisarrow_forwardDefine gene mutation Group of answer choices A. the process whereby organisms better adapted to their environment tend to survive and produce more offspring. B. the introduction of genetic material (by interbreeding) from one population of a species to another, thereby changing the composition of the gene pool of the receiving population C. variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. D. A rare and random change in a gene that can be bad or benef icial depending on the environment .arrow_forward1arrow_forward
- Modern dogs are direct descendants of the gray wolf. They first appeared about 130,000 years ago. Today, there are about 150 different breeds of domestic dog, a few of which are shown below. 1. Gray wolf All modern domestic dogs are descendants of the gray wolf. adapted from: www. pba.org The great variety of modern dogs can best be explained by A. selective breeding of dogs over many years B. the cloning of domestic dogs C. genetic alterations in gray wolves alive today D. natural selection favoring wolves over dogsarrow_forwardCertain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors that could see. Research indicates that the brain centers for vision in these fish is degenerating, whereas the brain centers controlling other senses are enlarging. What might be the MOST probable reason for the loss of vision in these fish? O A. exposure to mutagens that caused the loss of vision B. progressive selection of genetic variants in the population leading to blindness as an evolutionary adaptation C. infection by cave-dwelling microorganisms that has led to degeneration of the eyes O D. extreme high pressure at the ocean depths causing a deterioration of visionarrow_forwardWhat observations are consistent with the conclusion that DNA serves as the genetic material in eukaryotes? Select the four correct statements. a. DNA content and ploidy in various cell types( sperm and somatic cells) are related b. DNA is found to be the only macromolecule in eukaryotes that has different subunits. c. Gene transfer is a direct evidence as it has been facilitated by recombinant DNA techniques. d. The correlation of the action and absorption spectra of ultraviolet light support the interpretation that DNA is a genetic material. e. DNA is shown to be present in ribosomes, matrix, and nucleus, where genetic function is performed. f. DNA is shown to be present in mitochondria, chloroplasts, and nucleus, where genetic function is performed.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
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY