Combo Biology With Connect Access Card
12th Edition
ISBN: 9781259638268
Author: Sylvia S. Mader Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 15, Problem 1TS
Mutations occur at random and can increase within a population for no particular purpose. Our immune system is capable of detecting and killing certain viruses. Would a virus, such as HIV, that has a frequent rate of mutation be more or less successful in avoiding the immune system? Explain.
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In the replica plate experiment, it shows that mutations are random. However, certain environmental stresses (such as high temperature, high salt, and low pH) can increase the mutation rate.
QUESTIONS:
Does increasing the mutation rate increase the probability that an individual mutation will be adaptive?
Some populations change noticeably in form within a hundred years. If only one gene in every 200,000 mutates and if most mutations are harmful, how is such change possible?
Point mutations, like the single-nucleotide substitution in human sickle-cell trait, illustrate which of the following evolutionary features?
mutations are never detrimental and always advantageous, regardless of the environment
mutations might be either advantageous or detrimental, depending on the environment
mutations are always detrimental and never advantageous, regardless of the environment
mutations are neither advantageous nor detrimental, regardless of the environment
mutations are always both advantageous and detrimental, regardless of the environment
Chapter 15 Solutions
Combo Biology With Connect Access Card
Ch. 15.1 - Define catastrophism and identify who proposed...Ch. 15.1 - Evaluate Lamarck’s idea of “inheritance of...Ch. 15.1 - Construct a timeline of the history of...Ch. 15.2 - List the three categories of observations made by...Ch. 15.2 - Summarize the components of Darwin’s theory of...Ch. 15.2 - Prob. 3CYPCh. 15.3 - Prob. 1CYPCh. 15.3 - Summarize the difference between homologous and...Ch. 15.3 - Explain how biomolecules support the theory of...Ch. 15.3 - Prob. 4CYP
Ch. 15 - Prob. 1NS.1QCCh. 15 - How does the tree of life support Darwin’s theory...Ch. 15 - Which of these pairs is mismatched? a. Charles...Ch. 15 - Prob. 2ACh. 15 - Prob. 3ACh. 15 - Why was it helpful to Darwin to learn that Lyell...Ch. 15 - Prob. 5ACh. 15 - Organisms a. compete with other members of their...Ch. 15 - Prob. 7ACh. 15 - A key biogeographical observation made by Darwin...Ch. 15 - Prob. 9ACh. 15 - Humans are able to cause organisms to evolve...Ch. 15 - Prob. 11ACh. 15 - Prob. 12ACh. 15 - Prob. 13ACh. 15 - All vertebrate embryos have pharyngeal pouches....Ch. 15 - Transitional fossils have been found between some...Ch. 15 - Mutations occur at random and can increase within...Ch. 15 - 2. A cotton farmer applies a new insecticide...Ch. 15 - Prob. 3TSCh. 15 - Both Darwin and Wallace, while observing life on...
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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
- Are gene mutations caused by selective pressures in the environment? In other words, do gene mutations arise in an organism out of need or want? Group of answer choices A. No, because gene mutations are not purely random. B. Yes, because gene mutations are not purely random. C. No, because gene mutations are purely random. D. Yes, because gene mutations are purely random.arrow_forwardbetween gene mutation and structural mutations, which of them would likely persist in the population? why?arrow_forwardWhich of the following does not apply to mutations?a. They occur to cause adaptive changes in response to the environment.b. They are usually either harmful or neutral.c. They are only inherited if they occur in a sperm or egg cell.d. They often occur when DNA is copied.arrow_forward
- Which of the following statements best describes the effect of mutations in DNA? A Mutations result in changes that can be positive, be negative, or have no consequences B Mutations result in changes that always have negative consequences C Mutations result in changes that cannot be detected unless it is revealed by genetic screening D Mutations result in changes that have no consequencesarrow_forwardWhich of the following statements accurately describes genetic mutations? * Mutations are a natural process that increases genetic diversity. Mutations are an unnatural process that always affect the phenotype. Mutations are an unnatural process that are always harmful. Mutations are a natural process that only effects genotype, not phenotype.arrow_forwardWhy is mutations almost always neutral or harmful? If this is true, why are mutations nevertheless essential to evolutionarrow_forward
- A single base change can create devastating genetic disorder or a beneficial adaption, or it might have no effect. How do mutations happen, and how do they influence the future of a species?arrow_forwardIf a population is already well-adapted to its environment, will most mutations be helpful or harmful? Explain.arrow_forwardIf a species is immutable (mutations do not occur) is evolution possible? Explainarrow_forward
- If mutations occur at random with respect to an organism’s needs, how does a species become more adapted to its environment over time?arrow_forwardEvolution happens over time through mutations at the chromosomal and nucleotide levels. Mutations can be beneficial, neutral, or harmful. Most mutations are neutral. Describe 6 different types of mutations that can occur at the chromosomal and nucleotide levels. Make sure to include 3 types of each.arrow_forwardIs gene transfer a form of eugenics? Is it advantageous to use gene transfer to eliminate some genetic disorders? Can this and other technology be used to influence the evolution of our species? Should there be guidelines for the use of genetic technology to control its application to human evolution? Who should create and enforce these guidelines?arrow_forward
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