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TEKS Biology High School - B.7.F: Evolutionary Mechanisms

Quiz by TEKS Biology High School

High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

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High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

B.7.F: Evolutionary Mechanisms

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4 questions
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  • Q1
    Common baboons live on the savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop. Which of these is a likely outcome of movement by young males?
    Allele frequencies suddenly change
    Relative genotypic frequencies reach a constant state
    Intermediate phenotypes increase in the species
    Gene flow occurs between populations
    B.7.F: Evolutionary Mechanisms
  • Q2
    Two populations of mice living in the same forest are separated by a large water-filled ditch. After a rainstorm, flooding brings several mice from one population to the other population. When the mice from the first population reproduce with members of the second population, which of the following will likely occur?
    The offspring in the second population will have greater genetic variety
    The offspring will be forced to leave the second population
    All the offspring will die as a result of reproductive mutations
    The offspring will be genetically identical to their parent from the first population
    B.7.F: Evolutionary Mechanisms
  • Q3
    Lord Howe Island is a volcanic island in the Tasman Sea that is about 11 km long and 2.8 km wide. The island has two species of palm trees, Howea forsteriana and the more abundant Howea belmoreana. The two species do not interbreed even when they grow very close to each other. Which evolutionary process fails to occur?
    Natural selection of adaptive traits in both species
    Mutations in Howea belmoreana
    Gene flow between the two species
    Genetic drift of Howea forsteriana
    B.7.F: Evolutionary Mechanisms
  • Q4
    The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these most likely increases?
    Genetic variation
    Environmental fitness
    Natural selection
    Reproductive mutations
    B.7.F: Evolutionary Mechanisms

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