Topic 1 : High Altitude Adaptation. In the recorded interview (1)*, Emilia Huerta-Sanchez describes some research her team conducted. Watch the video, then address the following questions:

• (a) What data did they collect, who did they collect it from, and what were they looking for?
• (b) Which gene was implicated as a gene associated with high altitude adaptation, and what does it do?
• (c) Why do they think that the high incidence of this gene in populations who live at high altitudes is due to natural selection?