The Tibetans and Han Chinese share several genetic traits and DNA. However, the EPAS1 gene, which increases the ability of red blood cells to carry oxygen even in low oxygen environments, is only commonly found in the Tibetan population that live in higher elevations. Explain why this gene is only common in Tibetan populations from the perspective of competitive advantage and natural selection. Write your answer in three to five sentences...

Answer 1

The EPAS1 gene provides a competitive advantage for individuals living in high-altitude environments by enabling them to thrive in low oxygen conditions. This gene allows for better adaptation to the harsh conditions and reduces the risk of altitude sickness. As a result, individuals who possess this gene are more likely to survive and reproduce in high-altitude areas, leading to its prevalence in Tibetan populations living at high elevations. Natural selection favors those who are better equipped to survive and reproduce in their environment, which explains why the EPAS1 gene is only common in Tibetans living in higher elevations.

Answer 2

use simpler terms

Answer 3

The EPAS1 gene helps Tibetans living at high altitudes to breathe better in low-oxygen environments. This gene gives them an advantage and allows them to adapt to the tough conditions at high elevations. Because of this, Tibetans with the EPAS1 gene are more likely to survive and have children, passing on the gene to future generations. This is why the EPAS1 gene is common in Tibetans living in the mountains.