Bioscience II Exam 1

37 Questions | Total Attempts: 145

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Bioscience Quizzes & Trivia

Practice Exam Posted Online and some random questions


Questions and Answers
  • 1. 
    Among "Gypsies" (the Roma) there is a mutation (1267de1G) that is particulary common. Individuals identified as Roma live at varioous locations in the Old world. Statistical analysis dates the mutation's arrival in the population to ~1000 years ago. The mutation is otherwise found only in families of Indian or Pakistani origin, supporting the theology that the Roma originated there. One would predict that the reason for its much higher incidence among the Roma than among Indians or Pakistani is
    • A. 

      Genetic drift is the small populations of the Roma

    • B. 

      Gene flow from India and Pakistan to the various parts of the world where the Roma live

    • C. 

      Higher levels of inbreeding in the small populations of the Roma than are found in the much larger breeding populations in India or Pakistan

    • D. 

      Tow of the above are liely explantions

    • E. 

      None ofthe above is correct

  • 2. 
    Hybridization between humans and chimpanzees is unliekly to produce a viable lineage of hybride because
    • A. 

      Humans anc himpanzeeshave different alleles

    • B. 

      Humans have more DNA than chimp

    • C. 

      Humans have more genes than chimps

    • D. 

      Humans and chimps do not have a common karyotype

    • E. 

      Mitosis in the hybrid will result in abnormal cells

  • 3. 
    ON which of the following did Linneaeus base his classification system?
    • A. 

      Morphology and anatomy

    • B. 

      Evolutionary history

    • C. 

      The fossil record

    • D. 

      A and b only

    • E. 

      A, b, and c

  • 4. 
    There is a theory that to account for highly complex biological systems as we know them todya, it is essential to rely on the presence of a intelligence ot explain the complexity of those systems.
    • A. 

      The theory has met with general acceptance because we have otherwise been unsuccessful in explaining the evolution of such complex structures as the human eye

    • B. 

      Thetheory is consistent withthe theory set forth by Darwin and Wallace because an intelligence can only explain why evolution progressively leads to higher levels of complexity

    • C. 

      The theory has ont met with approval by evolutionary biologists becuase it has been demonstrated that there is no such intelligence that could be responsible for the organization of modern biological systems.

    • D. 

      None of the above is a correct statement

  • 5. 
    Which of the follwing was Darwin famililar with and contributed to his crafting of his theory in the latter part of the 1830's shortly after returning form his voyage on the Beagle:
    • A. 

      Continenetal drift

    • B. 

      Gregor Mendel's model of particulate inheritance

    • C. 

      The modification (domestication) of populations of aniamls and plants by selective breeding

    • D. 

      Fossil prokaryotes

    • E. 

      Archaeopteryx

  • 6. 
    Darwin is credited with:
    • A. 

      Demonstrating that life has existed one arth for a substantially longer period of theim that the Bible Suggests

    • B. 

      Promoting an approach to biology such that theories may be proposed without having first compiled an exhaustive background of observations

    • C. 

      First proposing that the characteristics that organisms have can be inherited by their descendants

    • D. 

      First proposing that evolution occurs.

  • 7. 
    In an effort to influence the gene pool in the early twentieth centruy United States, the government promoted policies of Social Darwinism by all of the followign except which one:
    • A. 

      Sterilizing humans judged to be mentally defective

    • B. 

      Restricting human immigration

    • C. 

      Proscribing interracial marriage

    • D. 

      Genetic engineering humans

  • 8. 
    Electrophoresis has been used to determine levels of
    • A. 

      Radioisotopes in sedimentary rock

    • B. 

      Iridium in the soil

    • C. 

      Shock crystals near meteor craters

    • D. 

      Genetic variation within populations

    • E. 

      Inbreeding within population

  • 9. 
    Which of the following are liely examples of homologous organs or structures?
    • A. 

      The feeding apparatus of the butterlfy and the hummingbird

    • B. 

      The wing of a dragonfly and that of a bird

    • C. 

      The flagella of prokaryotes and eukaryotes

    • D. 

      The wings of a bird and the arms of an orangutan

  • 10. 
    The "biological speiceis concept" offers us a practical way to distinguish species of organisms and to assign individuals to one taxon or another. In order to catalog individuals as being members of one species or another using this concept focuses on
    • A. 

      Morphological difference distinguishing the species

    • B. 

      Differences in the geographic distribution of the species

    • C. 

      The ability of individuasl to successfully breed with each other

  • 11. 
    In New Guinea, Vogelkop bowerbirds erect bowers of sticks that are stacked about a central tree. One of the two populations that is found at different locations on one of the islands constructs bowers that have a rounded shape. In front of the bowers, the birds pile brightly colored objects. The other populations of birds constructs bowers that appear as spries and these have no brightly-colored objects.
    • A. 

      The bowers are used by the birds as a refuges from predators.

    • B. 

      The bowers are used by the birds as protective areas for rearing young

    • C. 

      The populations of bower birds appear to be reproductively isolated

    • D. 

      If the birds diverge into two distinct species, we will be able to attribute it to kin selection

    • E. 

      While the bird populations differ regarding the bower construction and ornamentation, the two populations, never the less, continue to interbreed because sexual attractionr elies on olfactory cues and despite the divergence in bower characteristics via what we refer to as genetic drift, the two populations remain part of a single species.

  • 12. 
    In the example of species formation involving flies that feed on fruit in Wisconsin, the two populations of flies are kept reproductively isolated because
    • A. 

      They use different odors to advertise to mates

    • B. 

      Theyhave different courtship dances

    • C. 

      They make different noises by rubbing body parts in dfferent ways

    • D. 

      They find different frutis acceptable as stages for courtship dances

    • E. 

      The frutis that they use mature at different times of the year

  • 13. 
    One form that "social Darwinism" took in the early twentieth century was
    • A. 

      The encouragement of the socially disadvantaged citizens to develop skills that would contribute to their social and political advancement

    • B. 

      The social inegration of various "racial" and ethnic groups by promoting non-discriminatory policies.

    • C. 

      Discouraging the reproduction of those deemed to be genetically inferior

    • D. 

      The demonstration of a philosophical bias by scientists that social behaviors were the consequence of environmental influences

    • E. 

      None of the above is a good answer

  • 14. 
    Some species of Whiptail lizards are partheonogenetic. That is to say, there are no males; females reproduce via unfertilized eggs. Modern speices of these lizards appeared to have evolved via the hybridization of closely-related species.
    • A. 

      True

    • B. 

      False

  • 15. 
    Which of the following is true of the extinction of dinosaurs 65 million years ago?
    • A. 

      It has been demonstrated that a meteor was the cause of the extinction

    • B. 

      A meteor could not have caused the global extinction of the dinosaurs because the impact would only hit and kill animals in a very limited area

    • C. 

      The distribution of shock crystals suggests that the impact of a meteor occurred in what is now Mexico

  • 16. 
    On the Hawaiian island or Kauai, Telogryllus oceanicus crickets came from Australia and western Pacific islands. Male crickets advertised their reproductive availability by broadcasting an auditory display by using specialized anatomical features. The parasitic fly Ormia ochracea fly, invaded from North America. In the 1990's , there was an intense fly infestation parasitizing one-third of the crickets. In a 2001 survey, only one male was heard singin and in 2003 no males were heard singing. the cricekts were still there, in fact the cricket population was larger than it had been for years but few males sitll had wings with functional chirping equipment. The silencing came from chages in only one or two genes. if you were the investigator of the reason for why the change in only one or two genes. if you were the investigator of the reason for why the chagne occurred so quickly, you might reasonably hypothesize that hte resulting chagne in the crickets is a matter of
    • A. 

      Natural selction and genetic drift

    • B. 

      Natural selciton alone

    • C. 

      Genetic drift alon e

    • D. 

      Artificial selction and gene flow

    • E. 

      Artificial selection and genetic drift

  • 17. 
    There is evidence that one or perhaps two individuals of one specieis of finch originally colonized the Galapagos Islands, and more specifically San Cristobal Island on the eastern and of the archipelago. Since that time, the descendants of that species have proliferated into a number of species. The ancestor of the original colonizer(s) came from the Americas. One would expect to find that
    • A. 

      There is less diversity in the mitochondrial DNA of finches on San Cristobal than among their finch ancestors remaining in the Americas

    • B. 

      There is more diversity in the mitochondrial DNA of finches on San Cristobal than among their finch ancestors remaining in the Americas

    • C. 

      There is the same level of diversity in the mitcohondrial DNA of finches on San Cristobal as is found among thier finch ancestors remaining in the Americas

  • 18. 
    That birds have the same bones in their wings as whales have in their flippers may be best interpreted as evidence that:
    • A. 

      Birds had ancestors that were capable of swimming

    • B. 

      Whales had ancestors that were capable of flying

    • C. 

      Modern birds and whales share a common ancestor

    • D. 

      Modern flippers evolved from wings

    • E. 

      Modern wings evolved from flippers

  • 19. 
    Data in the figure below is consistent with the hypothesis that:
    • A. 

      The greater the degree of geographic isolation between populations the less gene flow

    • B. 

      Natural selection has generated a greater amoung of evolutionary change in some population

    • C. 

      Mutation rates are higher when populations are separated by great distances

    • D. 

      New species form when populations are geographically isolated

  • 20. 
    Which factor most liekly caused the animals and plants of India to differ greatly from species in nearby southeast Asia?
    • A. 

      The species have become separated by convergent evolution

    • B. 

      The climates of the two regions are similar

    • C. 

      India is in the process of separating form the rest of Asia

    • D. 

      Life in India was wiped out by ancient volcanic eruptions

    • E. 

      India was a separate continent until about 55 million years ago

  • 21. 
    The theory that a meteor impact played a role in the mass extinction of dinosaurs is supported by all of the follwoing except which one?
    • A. 

      Discovery of a crater dating to 65 million years ago

    • B. 

      Shock crystal distributions

    • C. 

      A layer of the rare earth element iridium in deposits dating to the time of that mass extinction

    • D. 

      Caves near Lascaux in France have sketches, engravings and paintings depicting events aroudn the timeof the event

    • E. 

      Results of computer modeling of volcanic and nuclear incidents

  • 22. 
    It was widely accepted in Darwin's day that the assemblage of organisms on earth had changed over time. One theory to expain the apparent chagne held that there ahd been a series of local mass extinctions followed by the immigration of novel organisms from other places on earth. Such a theory is not considered a "scientific" theory because ti is not possible to prove that in the past such immigration events actually occurred.
    • A. 

      True

    • B. 

      False

  • 23. 
    During the 1970's on an island in the Galapagos, a speicies of finch was observed to experience a change in the size of beaks. The size distribution of beaks changes such that average beak size increased compared with what had existed earlier in the decade. The explanation for why the beaks had cahnged in size was that
    • A. 

      Birds with larger boides ahd larger beaks and the larger-bodied birds were preferre by mates (sexual selection)

    • B. 

      Birds with the larger bodies were more successful in avoiding predators and theorfore had greater opportunities to reproduce

    • C. 

      A hurricane had caused a large-scale dying off the species, and by cahgne the few individuals that survived and then went on to reproduce, ahd beaks at the larger extreme of the preveious generations (genetic drift)

    • D. 

      A captive breedign program initiated by thenational park the oversees wildlife on the islands had unwittingly selcted th leargest and seemingly most robust individuals to breed. (Unknowing to the park rangers was that these individuals, despite their size, had low fertility, and the program was a diaster. )

    • E. 

      Larger-beaked individuals were more successful at harvesting the limited food resources available during the particularly arid period.

  • 24. 
    Sympatric speciation, as illustrated by "true" fruit flies that feed on apples and cherries (in Wisconsin) is a classic illustration of the necessity for geographic isolation before speciation can occur
    • A. 

      True

    • B. 

      False

  • 25. 
    For evolution to occur,
    • A. 

      Populations must be relatively small (or at least not infinitely large)

    • B. 

      There must be no migration

    • C. 

      Some individuals must be more successful at leaving offspring than others

    • D. 

      Mutations must occur

    • E. 

      Populations must not be very large

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