Question
7. Guppies are small fish that live in South American rivers. They can have different-sized spots on their bodies.
The river bottoms are covered in rocks. Guppies with spots that are the same size as the rocks on the bottom are harder for bigger fish to see and catch.
The diagram below shows a population of guppies that live in a river. At time 1, the population had the same number of guppies with small and large spots. At time 2, after many generations, there were many more guppies with small spots and fewer guppies with large spots in the population.
2 diagrams, each containing rows of fish icons. The first diagram is titled Population at Time 1 and contains 2 rows of 4 fish icons each, one labeled Small Spots and one labeled Large Spots. The second diagram is titled Population at Time 2 and contains 2 rows of fish icons. The first row is labeled Small Spots and contains 7 fish icons. The second row is labeled Large Spots and contains 2 fish icons. An arrow points from the first diagram to the second diagram and is labeled: After Many Generations.
audio
speed
7. How did the environment change between time 1 and time 2? How did the population change?
Responses
a
You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.
You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.
b
The rocks became smaller. With each generation, more guppies with small spots survived long enough to pass on the gene for small spots to their offspring.
The rocks became smaller. With each generation, more guppies with small spots survived long enough to pass on the gene for small spots to their offspring.
c
The rocks became smaller. Guppies with small spots are more likely to survive, so the guppies with large spots changed to have small spots.
The rocks became smaller. Guppies with small spots are more likely to survive, so the guppies with large spots changed to have small spots.
d
The rocks became smaller. Guppies with small spots are more likely to survive, so both kinds of guppies passed on the gene for small spots to their offspring.
The rocks became smaller. Guppies with small spots are more likely to survive, so both kinds of guppies passed on the gene for small spots to their offspring.
The river bottoms are covered in rocks. Guppies with spots that are the same size as the rocks on the bottom are harder for bigger fish to see and catch.
The diagram below shows a population of guppies that live in a river. At time 1, the population had the same number of guppies with small and large spots. At time 2, after many generations, there were many more guppies with small spots and fewer guppies with large spots in the population.
2 diagrams, each containing rows of fish icons. The first diagram is titled Population at Time 1 and contains 2 rows of 4 fish icons each, one labeled Small Spots and one labeled Large Spots. The second diagram is titled Population at Time 2 and contains 2 rows of fish icons. The first row is labeled Small Spots and contains 7 fish icons. The second row is labeled Large Spots and contains 2 fish icons. An arrow points from the first diagram to the second diagram and is labeled: After Many Generations.
audio
speed
7. How did the environment change between time 1 and time 2? How did the population change?
Responses
a
You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.
You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.
b
The rocks became smaller. With each generation, more guppies with small spots survived long enough to pass on the gene for small spots to their offspring.
The rocks became smaller. With each generation, more guppies with small spots survived long enough to pass on the gene for small spots to their offspring.
c
The rocks became smaller. Guppies with small spots are more likely to survive, so the guppies with large spots changed to have small spots.
The rocks became smaller. Guppies with small spots are more likely to survive, so the guppies with large spots changed to have small spots.
d
The rocks became smaller. Guppies with small spots are more likely to survive, so both kinds of guppies passed on the gene for small spots to their offspring.
The rocks became smaller. Guppies with small spots are more likely to survive, so both kinds of guppies passed on the gene for small spots to their offspring.
Answers
GPT-4o mini
The most accurate response based on the information provided is:
**a**
*You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.*
This option correctly identifies that we do not have specific information about how the environment (specifically the size of rocks) has changed. The increase in guppies with small spots can be attributed to natural selection, where those guppies had a greater survival advantage due to their camouflage against the rocks, allowing them to pass their traits to the next generation. However, there is no clear indication that the rocks themselves changed in size from the context given.
**a**
*You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.*
This option correctly identifies that we do not have specific information about how the environment (specifically the size of rocks) has changed. The increase in guppies with small spots can be attributed to natural selection, where those guppies had a greater survival advantage due to their camouflage against the rocks, allowing them to pass their traits to the next generation. However, there is no clear indication that the rocks themselves changed in size from the context given.