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Category > Biology Posted 19 May 2019 My Price 6.00

SCI 115 Week 7 Quiz Answers

QUESTION 1

  1. An unusual, worldwide formation of sedimentary rock called the K–Pg boundary sequence contains rare elements that are associated with a(n) ____.​
    a.
    ​large earthquake
    b.
    ​asteroid impact
    c.
    worldwide flood​
    d.
    ​Ice Age
    e.
    ​volcanic eruption
     

3 points   

QUESTION 2

  1. The discovery of immense ridges and trenches stretching thousands of kilometers across the seafloor in the 1950’s led to acceptance of the theory of ____.​
    a.
    ​natural selection
    b.
    magnetic poles​
    c.
    ​creationism
    d.
    ​evolution
    e.
    ​plate tectonics
     

3 points   

QUESTION 3

  1. Master genes that affect development tend to be highly ____; therefore, similarities in patterns of embryonic development reflect shared ancestry that can be evolutionarily ancient.​
    a.
    ​mutated
    b.
    related​
    c.
    homologous​
    d.
    ​conserved
    e.
    degraded​
     

3 points   

QUESTION 4

  1. Hind leg bones in whales are an example of ____ structures.​
    a.
    vestigial​
    b.
    ​analogous
    c.
    ​adaptive
    d.
    ​homologous
    e.
    ​fossilized
     

3 points   

QUESTION 5

  1. When a certain form of a trait increases the fitness of the individual, this allele will tend to ____ over time.​
    a.
    ​decrease in frequency in the population
    b.
    ​affect the function of vestigial structures
    c.
    ​lead to extinction of the population
    d.
    ​be eliminated from the population
    e.
    ​increase in frequency in the population
     

3 points   

QUESTION 6

  1. ​Two species of toads have been successfully interbred in a laboratory but do not hybridize in nature because one species mates in summer and the other mates in the fall. This is an example of ____ isolation.
    a.
    ​inbred
    b.
    ​physical
    c.
    ​reproductive
    d.
    ​genetic
    e.
    ​ecological
     

3 points   

QUESTION 7

  1. ​The movement of alleles among populations is called _____.
    a.
    ​gene flow
    b.
    ​bottleneck
    c.
    ​genetic drift
    d.
    ​founder effect
    e.
    ​mutation
     

3 points   

QUESTION 8

  1. ​The observation that female lions prefer male lions with darker manes is an example of ____.
    a.
    ​dominance
    b.
    ​sexual selection
    c.
    ​directional selection
    d.
    ​disruptive selection
    e.
    ​a sexual handicap
     

3 points   

QUESTION 9

  1. ​With the extinction of the dinosaurs 65 million years ago, multiple niches that the dinosaurs once filled opened up and allowed mammals the opportunity to evolve and exploit those niches. This is an example of ____.
    a.
    ​sympatric speciation
    b.
    ​phylogeny
    c.
    ​phylogenetic isolation
    d.
    ​adaptive radiation
    e.
    ​reproductive isolation
     

3 points   

QUESTION 10

  1. ​All of the alleles in a population make up the ____.
    a.
    ​species diversity
    b.
    ​species richness
    c.
    ​genome
    d.
    ​species abundance
    e.
    ​gene pool

Answers

SmartExpert
(118)
Status NEW Posted 19 May 2019 05:05 PM My Price 6.00

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Attachments

file 1558289844-SCI 115 Week 7 Quiz Answers.docx preview (381 words )
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