Item EN047003: A species living today and an extinct species could share a common ancestor that lived a very long time ago, even if the two species have few similarities.

Which of the following is TRUE about living species and extinct species?

  1. If a species living today and an extinct species have many similarities, they could share a common ancestor, but if they have few similarities they could not share a common ancestor.
  2. A species living today and an extinct species could share a common ancestor that lived a very long time ago, even if the two species have few similarities.
  3. No species living today could share a common ancestor with an extinct species.
  4. Species living today could share a common ancestor with each other, but extinct species could not share a common ancestor with each other because extinct species are the ancestors of species living today, never of each other.
Distribution of Responses
Chart showing distrubtion of responses for Item EN047003
Students Responding Correctly
Group Correct Total Percent
Overall 1689 3089 55%
Grades
  6–8 958 1928 50%
  9–12 731 1161 63%
Gender
  Male750144052%
  Female892156557%
Primary Language
  English1515276355%
  Other13024553%

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