Evolution
Evolution and Natural Selection
Item EN046010: Cats, dogs, fish, and birds all share an ancient common ancestor.
Some animals, such as a cat and a dog, have many similarities. Others, such as a fish and a bird, have fewer similarities. What is TRUE about the ancestors of these animals?
- Cats and dogs share a common ancestor with each other, but fish and birds do not share a common ancestor with each other.
- Cats and dogs share a common ancestor with each other, and fish and birds share a common ancestor with each other, but cats and dogs do not share a common ancestor with fish and birds.
- Because cats, dogs, fish, and birds are separate species, none of them shares a common ancestor with any other.
- Cats, dogs, fish, and birds all share an ancient common ancestor.
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 281 | 2269 | 12% |
| Grades | |||
| 6–8 | 6 | 91 | 7% |
| 9–12 | 248 | 2013 | 12% |
| Gender | |||
| Male | 131 | 963 | 14% |
| Female | 128 | 1143 | 11% |
| Primary Language | |||
| English | 249 | 2055 | 12% |
| Other | 8 | 63 | 13% |
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 347 | 1104 | 31% |
| Grades | |||
| 6–8 | 13 | 70 | 19% |
| 9–12 | 291 | 901 | 32% |
| Gender | |||
| Male | 152 | 434 | 35% |
| Female | 159 | 555 | 29% |
| Primary Language | |||
| English | 301 | 949 | 32% |
| Other | 9 | 33 | 27% |
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 532 | 1165 | 46% |
| Grades | |||
| 6–8 | 10 | 18 | 56% |
| 9–12 | 468 | 1059 | 44% |
| Gender | |||
| Male | 237 | 535 | 44% |
| Female | 263 | 571 | 46% |
| Primary Language | |||
| English | 468 | 1055 | 44% |
| Other | 16 | 33 | 48% |