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Sagot :
To determine which option best describes the results of the experiment, let's analyze the given data step by step.
1. Starting Populations:
- On light-colored trees:
- Light-colored moths: 20
- Dark-colored moths: 20
- On dark-colored trees:
- Light-colored moths: 20
- Dark-colored moths: 20
2. Ending Populations:
- On light-colored trees:
- Light-colored moths: 25
- Dark-colored moths: 15
- On dark-colored trees:
- Light-colored moths: 5
- Dark-colored moths: 35
3. Changes in Population:
- For light-colored trees:
- Change in light-colored moths: [tex]\( 25 - 20 = 5 \)[/tex]
- Change in dark-colored moths: [tex]\( 15 - 20 = -5 \)[/tex]
- For dark-colored trees:
- Change in light-colored moths: [tex]\( 5 - 20 = -15 \)[/tex]
- Change in dark-colored moths: [tex]\( 35 - 20 = 15 \)[/tex]
4. Evaluate the fitness based on population changes:
- On light-colored trees:
- Light-colored moths: Increased by 5
- Dark-colored moths: Decreased by 5
- On dark-colored trees:
- Light-colored moths: Decreased by 15
- Dark-colored moths: Increased by 15
From these observations, we can infer the relative fitness of the moths in each environment:
- On light-colored trees, the light-colored moths were more fit since their population increased, while the dark-colored moths' population decreased.
- On dark-colored trees, the dark-colored moths were more fit since their population increased, while the light-colored moths' population decreased.
Conclusion:
The best description of the results of this experiment is:
- A. The dark-colored moths were more fit.
This choice highlights the increased fitness and survival of dark-colored moths in the transformed environment (dark-colored trees), which led to an increase in their population.
1. Starting Populations:
- On light-colored trees:
- Light-colored moths: 20
- Dark-colored moths: 20
- On dark-colored trees:
- Light-colored moths: 20
- Dark-colored moths: 20
2. Ending Populations:
- On light-colored trees:
- Light-colored moths: 25
- Dark-colored moths: 15
- On dark-colored trees:
- Light-colored moths: 5
- Dark-colored moths: 35
3. Changes in Population:
- For light-colored trees:
- Change in light-colored moths: [tex]\( 25 - 20 = 5 \)[/tex]
- Change in dark-colored moths: [tex]\( 15 - 20 = -5 \)[/tex]
- For dark-colored trees:
- Change in light-colored moths: [tex]\( 5 - 20 = -15 \)[/tex]
- Change in dark-colored moths: [tex]\( 35 - 20 = 15 \)[/tex]
4. Evaluate the fitness based on population changes:
- On light-colored trees:
- Light-colored moths: Increased by 5
- Dark-colored moths: Decreased by 5
- On dark-colored trees:
- Light-colored moths: Decreased by 15
- Dark-colored moths: Increased by 15
From these observations, we can infer the relative fitness of the moths in each environment:
- On light-colored trees, the light-colored moths were more fit since their population increased, while the dark-colored moths' population decreased.
- On dark-colored trees, the dark-colored moths were more fit since their population increased, while the light-colored moths' population decreased.
Conclusion:
The best description of the results of this experiment is:
- A. The dark-colored moths were more fit.
This choice highlights the increased fitness and survival of dark-colored moths in the transformed environment (dark-colored trees), which led to an increase in their population.
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