Time (Years 21. The graph above shows data for the amount of light-colored and dark-colored peppered moths over a series of years. Which of the following is the best possible explanation for the change in the data? A. Forest fires wiped out the prefered habitat of the light-colored moths B. Light-colored moths decreased due to a disease specific to the light phenotype C. Sexual selection preferences of the female moths changed to favor the dark-colored male moths D. Trees darkened during the Industrial Revolution resulting in an increased fitness of dark-colored moths

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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21
## Evolution of Peppered Moths

### Use the graph below to answer question 21.

**Graph: Change of Pepper Moths over Time**

![Graph showing the change in population of light-colored and dark-colored peppered moths over time.]

- **Y-axis (vertical):** Amount of Moths
  - Scale ranges from 0 to 700 moths
- **X-axis (horizontal):** Time (years)
  - Scale ranges from 0 to 15 years

**Graph Data:**
- **Light-colored moths (Blue Line):**
  - Starting at approximately 600 moths, the population sharply decreases over the 15-year period.
  - The population reaches around 100 moths at the 15-year mark.
- **Dark-colored moths (Red Line):**
  - Starting at around 100 moths, the population sharply increases over the 15-year period.
  - The population reaches about 600 moths at the 15-year mark.

### Question 21:
The graph above shows data for the amount of light-colored and dark-colored peppered moths over a series of years. Which of the following is the best possible explanation for the change in the data?

A. Forest fires wiped out the preferred habitat of the light-colored moths

B. Light-colored moths decreased due to a disease specific to the light phenotype

C. Sexual selection preferences of the female moths changed to favor the dark-colored male moths

D. Trees darkened during the Industrial Revolution resulting in an increased fitness of dark-colored moths
Transcribed Image Text:## Evolution of Peppered Moths ### Use the graph below to answer question 21. **Graph: Change of Pepper Moths over Time** ![Graph showing the change in population of light-colored and dark-colored peppered moths over time.] - **Y-axis (vertical):** Amount of Moths - Scale ranges from 0 to 700 moths - **X-axis (horizontal):** Time (years) - Scale ranges from 0 to 15 years **Graph Data:** - **Light-colored moths (Blue Line):** - Starting at approximately 600 moths, the population sharply decreases over the 15-year period. - The population reaches around 100 moths at the 15-year mark. - **Dark-colored moths (Red Line):** - Starting at around 100 moths, the population sharply increases over the 15-year period. - The population reaches about 600 moths at the 15-year mark. ### Question 21: The graph above shows data for the amount of light-colored and dark-colored peppered moths over a series of years. Which of the following is the best possible explanation for the change in the data? A. Forest fires wiped out the preferred habitat of the light-colored moths B. Light-colored moths decreased due to a disease specific to the light phenotype C. Sexual selection preferences of the female moths changed to favor the dark-colored male moths D. Trees darkened during the Industrial Revolution resulting in an increased fitness of dark-colored moths
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