Le Hw4.3.6

8 Questions | Total Attempts: 175

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Le Hw4.3.6

These question deal with homologous structures and evolutionary trees. it's an amazing concept. get used to it. REMEMBER: PERIOD# followed by FIRST & LAST NAME


Questions and Answers
  • 1. 
    The evolutionary pathways of seven living species are shown in the diagram below. Which two species are likely to have the most similar DNA base sequences?
    • A. 

      B and G

    • B. 

      E and G

    • C. 

      B and C

    • D. 

      C and D

  • 2. 
    The diagram below illustrates possible evolu- tionary pathways of some species. Which statement is a valid inference based on the information in the diagram?
    • A. 

      Species A is the common ancestor of all life on Earth.

    • B. 

      Species D is more closely related to species E than to species F.

    • C. 

      Species B is the ancestor of species F.

    • D. 

      Species C is the ancestor of species that exist at the present time.

  • 3. 
    A technique used to reproduce plants is shown in the diagram below. This technique is a form of
    • A. 

      Sexual reproduction

    • B. 

      Asexual reproduction

    • C. 

      Selective breeding

    • D. 

      Gene manipulation

  • 4. 
    The diagram below represents the bones of the forelimbs of two animals alive today that most likely evolved from a common ancestor. Members of the original ancestral population were isolated into two groups by natural events. If these two animals did have a common ancestor, which statement would best explain why there are differences in the bones?
    • A. 

      Changes occurred to help the animals return to their original environment.

    • B. 

      Changes contributed to the survival of the organism in their new environment

    • C. 

      Changes helped reduce competition within each group.

    • D. 

      Changes indicate the species are evolving to be more like the ancestral species.

  • 5. 
    The remains of three organisms are shown below. A study of these remains would indicate that these organisms have
    • A. 

      Identical food preferences

    • B. 

      Identical body sizes

    • C. 

      Structural similarities

    • D. 

      Habitat similarities

  • 6. 
    A liver cell can make enzymes that a heart cell can not make because liver cells
    • A. 

      Digest large, complex molecules

    • B. 

      Contain more DNA than heart cells

    • C. 

      Use different genes than the heart cells use

    • D. 

      Remove carbon dioxide from blood

  • 7. 
    Four different segments of a DNA molecule are represented below. There is an error in the DNA molecule in
    • A. 

      Segment 1, only

    • B. 

      Segment 3, only

    • C. 

      Segments 2 and 3

    • D. 

      Segments 2 and 4

  • 8. 
    • A. 

      The organisms may have evolved from a common ancestor

    • B. 

      All species have one kind of bone structure

    • C. 

      The cells of the bones contain the same type of mutations

    • D. 

      All structural characteristics are the same in animals