Item CA015003: Organisms that have more traits in common are probably more closely related than organisms with fewer traits in common.
The table below shows the presence or absence of traits in seven different species.
Character |
Frog |
Bird |
Crocodile |
Whale |
Pig |
Gorilla |
Blowhole |
|
|
|
Yes |
|
|
Body hair |
|
|
|
Yes |
Yes |
Yes |
Amniotic egg |
|
Yes |
Yes |
Yes |
Yes |
Yes |
Forelimbs |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Backbone |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Holes in Skull |
|
Yes |
Yes |
|
|
|
Based only on the traits presented in the table, which organism is most closely related to whales?
- Pigs
- Birds
- Gorillas
- Not enough information is provided
- Distribution of Responses
- Points Earned
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 290 | 558 | 52% |
Grades | |||
6–8 | 14 | 25 | 56% |
9–12 | 257 | 498 | 52% |
Gender | |||
Male | 133 | 243 | 55% |
Female | 136 | 274 | 50% |
Primary Language | |||
English | 256 | 502 | 51% |
Other | 14 | 19 | 74% |
- Distribution of Responses
- Points Earned
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 157 | 294 | 53% |
Grades | |||
6–8 | 15 | 23 | 65% |
9–12 | 129 | 247 | 52% |
Gender | |||
Male | 61 | 109 | 56% |
Female | 87 | 171 | 51% |
Primary Language | |||
English | 143 | 264 | 54% |
Other | 3 | 9 | 33% |
- Distribution of Responses
- Points Earned
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 120 | 281 | 43% |
Grades | |||
6–8 | 1 | 3 | 33% |
9–12 | 111 | 257 | 43% |
Gender | |||
Male | 59 | 132 | 45% |
Female | 57 | 140 | 41% |
Primary Language | |||
English | 110 | 254 | 43% |
Other | 6 | 11 | 55% |
- Disciplinary Core Ideas
- LS4.A Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.
- Notes
- NGSS includes the idea that anatomical similarities and differences can be used to infer lines of evolutionary descent and, by extension, degree of relatedness, but it does not say explicitly that the greater the degree of similarity the more closely organisms are related.