Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 1, Problem 16TYPSS
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Human immunodeficiency virus (HIV) causes a sexually transmitted disease that cannot be cured but only prevented. According to natural selection, the traits which provides benefit to organism in terms of survival and reproduction are selected by nature and passed on to next generation.
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Students have asked these similar questions
Can viruses adapt by natural selection?
A. No, because there isn't a genetic basis for inheritance between parent and offspring virus particles.
B. No, because there isn't a way to distinguish more fit from less fit virus particles
C. Yes but only via human (domestic/artificial) selection
D. No they evolve by mutations.
E. Yes, virus particles that are most successful successful in reproducing quickly and infecting other host cells are the best adapted.
Of the following, which one is an example of an evolutionary explanation (as opposed to a functional explanation)?A. People evolved a fear of snakes because many snakes are dangerous.B. Humans have a (tiny) tailbone because our ancient monkey-like ancestors had a tail.C. People evolved an ability to recognize faces because that ability is essential for cooperative social behaviors.D. People evolved a tendency to form long-term male–female bonds because human infants benefit from the help of two parents during their long period of dependence.
Of the following, which is the least plausible hypothesis for why natural selection has not eliminated genes for male homosexuality? a. Perhaps the relatives of a homosexual male have more than an average number of children. b. Homosexual people might spread their genes by helping their brothers and sisters rear their children. c. Maybe there is no gene for homosexuality. Instead, an environmental event produces an epigenetic effect that can be transmitted from one generation to the next. d. Some homosexual men have children.
Chapter 1 Solutions
Biological Science
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6. Could both the food competition hypothesis and...Ch. 1 - What does it mean to say that experimental...Ch. 1 - The term evolution means that _____ change through...Ch. 1 - In biology, to what does the term fitness refer?Ch. 1 - Prob. 7TYUCh. 1 - What did Linnaeus' system of naming organisms...Ch. 1 - Prob. 9TYUCh. 1 - Explain how selection occurs during natural...
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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
- Which of these statements about the virulence of rabbit myxoma virus is TRUE?A. Rabbit myxoma virus needed to become less virulent so it could coexist with its rabbit hosts.B. Directional selection favored a coevolutionary escalation where resistance evolved in rabbits and less virulence evolved in the virus.C. Rabbit myxoma virus became less virulent over time because natural selection favored strains that did not immediately kill the rabbit hosts, enhancing the likelihood of spreading and infecting other rabbits.D. None of the above is a true statement.arrow_forwardWhich of the following best explains the role mutations play in natural selection?A. Most mutations are negative and result in the extinction of the entire speciesB. Mutations may appear for one or two generations, but they usually disappear quickly.C. If the environment changes, an existing organism develops a mutation that will help them to survive.D. Some mutations give individuals an advantage in their environment, allowing them to survive and reproduce.D is my answer is it correct?arrow_forwardWhich of the following is TRUE about eugenics? a. None of the above. b. The idea of eugenics came from an incorrect interpretation of natural selection. c. The Nazis used the idea of eugenics to justify murdering millions of people. d. In the United States, people were forcibly sterilized without their consent, and the courts ruled that this was legal. e. All of the above.arrow_forward
- What is meant by the following statement? "When mutation is random, natural selection is not." Mark all correct answers Group of answer choices A. A mutation is caused by changes in the environment. B. Natural selection can favor some mutations and not others. C.Mutations for advantageous traits are more likely to be passed on to the next generation. D.Selection can change depending on the environment.arrow_forwardYour friend remarks, “The giraffe stretched its neck while reaching for higher leaves; as a result, its offspring inherited longer necks.” Which statement is the BEST response to correct your friend’s misconception? A. overproduction of offspring leads to a struggle for survival B. characteristics acquired during an organism’s life are generally not passed on through genes to its offspring C. only favorable adaptations have survival value and unfavorable adaptations are removed from the population D. disuse of an organ may lead to its eventual disappearancearrow_forwardThe frequency of the CCR5Δ32 allele varies between populations. Research has shown that individuals with this allele are resistant to HIV with an increased frequency in European populations. This conferred resistance is a direct result of: a. An adaptation of domesticated animals. b. An adaptation to thousands of years of exposure to infectious diseases. c. An adaptation to smallpox. d. None of the above. e. An adaptation to malaria.arrow_forward
- In the movie on rock pocket mice, what did the team discover about black colouration? Select the ONE BEST answer. a. Fur colouration is the result of a new adaptive behaviour where pocket mice rolled in lava dust to camouflage themselves. b. It is the result of the same, single mutation in all populations. C. Different mutations cause similar dark colouration in different populations. d. One specific mutation causes black or white fur depending on the population. e. Fur colouration is the result of dietary changes in different environments, not natural selection.arrow_forwardWhich of the following is NOT a reason why Wakefield’s study on the connection between autism and vaccinations was flawed? A. the study had a small sample size B. the study was not replicable C. the study acquired samples unethically and, quite possibly, illegally D. the study demonstrated everyone’s well being was taken care of E. the authors committed deliberate fraud to support their hypothesisarrow_forwardImagine that some lizards from both islands are brought to a laboratory and lizards from each population are separately bred for a generation. The offspring resemble their parents (i.e. they look like lizards from their home island). Does this support or contradict the idea that evolution has occurred? Group of answer choices a. support because it implies that a genetic change has occurred b. contradict because the lizards were removed from the islands c. support because the phenotype matches the environment d. contradict because the environment is different in the lab e. support because it is a major change in phenotypearrow_forward
- Which 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_forwardAddress (don’t just say “true” or “false”) the following myths about evolution. Limit your answers to 1-2 sentences each: a. Evolution tells us how life began b. Evolution says animals do things for the good of their species. c. If evolution were true, they would call it a fact, not a theory.arrow_forwardWhich of the following statements is true? A. Evolution involves a change in gene frequencies from one generation to the next B. Natural selection is the only mechanism through which animals evolve to become adapted to their environment C. Genetic drift results in evolution but not adaptation to the environment D. For natural selection to occur, differences in genetically-based traits must result in differential reproductive success E. All of the above are truearrow_forward
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