Biology Unit 7 Lesson 5 High Altitude Living Quick Check Answers
1. Which adaptation allowed the Tibetans to live at high altitudes?
Answer - more efficient hemoglobin in the blood
2. Tibetans’ physiological adaptations make them less likely to suffer from
Answer - altitude sickness.
3. Which data would be the best evidence to support the claim that natural selection was still occurring in human populations?
Answer - Hotter temperatures during the summer months cause more deaths, and survivors tend to give birth to children that are more resistant to heat.
4. What do populations living at high elevations have to adapt to?
Answer - lower oxygen levels.
5. An enlarged right ventricle both increases oxygen intake and the risk of pulmonary hypertension. How can natural selection result in an adaption that produces both positive and negative effects?
Answer - The positive effects outweigh the negative effects in certain environments.
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