Original Project
Evolution and Natural Selection
Similarities and differences in inherited characteristics of organisms alive today or in the past can be used to…
Item EN049002: All dogs and cats share a common ancestor.
What do scientists find out when they trace the ancestors of dogs and cats?
- All dogs and cats living today share a common ancestor with each other that lived a very long time ago.
- All dogs share a common ancestor with each other, and all cats share a common ancestor with each other, but cats and dogs do not share a common ancestor with each other.
- Some dogs share a common ancestor with some cats, but all cats and dogs do not share a common ancestor with each other.
- Scientists cannot trace the ancestors of any two species back far enough to find out whether they had a common ancestor with each other.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1199 | 4505 | 27% |
| Grades | |||
| 6–8 | 633 | 2744 | 23% |
| 9–12 | 566 | 1761 | 32% |
| Gender | |||
| Male | 630 | 2152 | 29% |
| Female | 550 | 2263 | 24% |
| Primary Language | |||
| English | 1058 | 3994 | 26% |
| Other | 111 | 401 | 28% |