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Briefly interpret the graph and maps attached about the evolutionary arms race among garter snakes and newts?

Briefly interpret the graph and maps attached about the evolutionary arms race among garter snakes and newts?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Briefly interpret the graph and maps attached about the evolutionary arms race among garter snakes and newts?

### Analysis of Toxin Resistance in Newts and Snakes #### Part A: Logarithmic Relationship Between Newt Toxicity and Snake Resistance The graph in Part A illustrates the relationship between the log of newt toxicity and the log of snake resistance. Key features include: - **X-axis:** Log snake resistance - **Y-axis:** Log newt toxicity Three zones are highlighted: 1. **Newts kill all snakes:** Shaded area above the solid line where newt toxicity surpasses snake resistance. 2. **Toxicity and resistance roughly matched:** Central region between the two dashed lines. Here, approximately 85% proficiency indicates a balance between toxicity and resistance. 3. **Snakes unaffected by any newt:** Shaded area below the lower dashed line indicating the region where snake resistance exceeds newt toxicity. #### Part B: Geographic Mapping of Toxin Strength and Resistance Part B includes three maps displaying the Pacific Coast region, assessing both toxin strength in newts and the resistance level in snakes: 1. **Left Map - Strength of Toxin in Newts:** - Colors represent toxin strength: red (strong) to purple (weak). 2. **Right Map - Resistance of Snakes to Toxin:** - Colors denote resistance levels: red (strong) to purple (weak). 3. **Center Map - Match Between Newts and Snakes:** - Shows alignment differences: orange (well-matched) to purple (mismatched). - The overlay of the left and right maps highlights regional mismatches. The tropical and color-coded data across these maps help illustrate the spatial dynamics of the evolutionary arms race between newts and snakes, focusing on toxin potency and resistance spread along the Pacific Coast.
Transcribed Image Text:### Analysis of Toxin Resistance in Newts and Snakes #### Part A: Logarithmic Relationship Between Newt Toxicity and Snake Resistance The graph in Part A illustrates the relationship between the log of newt toxicity and the log of snake resistance. Key features include: - **X-axis:** Log snake resistance - **Y-axis:** Log newt toxicity Three zones are highlighted: 1. **Newts kill all snakes:** Shaded area above the solid line where newt toxicity surpasses snake resistance. 2. **Toxicity and resistance roughly matched:** Central region between the two dashed lines. Here, approximately 85% proficiency indicates a balance between toxicity and resistance. 3. **Snakes unaffected by any newt:** Shaded area below the lower dashed line indicating the region where snake resistance exceeds newt toxicity. #### Part B: Geographic Mapping of Toxin Strength and Resistance Part B includes three maps displaying the Pacific Coast region, assessing both toxin strength in newts and the resistance level in snakes: 1. **Left Map - Strength of Toxin in Newts:** - Colors represent toxin strength: red (strong) to purple (weak). 2. **Right Map - Resistance of Snakes to Toxin:** - Colors denote resistance levels: red (strong) to purple (weak). 3. **Center Map - Match Between Newts and Snakes:** - Shows alignment differences: orange (well-matched) to purple (mismatched). - The overlay of the left and right maps highlights regional mismatches. The tropical and color-coded data across these maps help illustrate the spatial dynamics of the evolutionary arms race between newts and snakes, focusing on toxin potency and resistance spread along the Pacific Coast.
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