Heritability (i.e., genetics) determines approximately_________ % of max variability in sedentary adults.a.50b.20c.30d.90

To answer the question regarding heritability and its influence on maximum variability in sedentary adults, we can analyze the options based on existing research in genetics and physiology.

Analysis of Options

1. Option a: 50% - This figure is a commonly referenced estimate in genetic studies related to physical traits but may be high when considering only sedentary adults.
2. Option b: 20% - This seems too low for genetic influence in the context of variability in sedentary adults.
3. Option c: 30% - This figure is plausible; studies often suggest that heritability can explain a moderate portion of variability in physical traits.
4. Option d: 90% - This is likely an overestimation; while genetics play a significant role, environmental factors also contribute to variability.

Conclusion

Based on the analysis of heritability in sedentary adults, the most acceptable estimate of maximum variability attributed to genetics would likely be option c. 30%. Thus, heritability determines approximately 30% of the maximum variability in sedentary adults.