About 3,000 years ago, the Tibetans were a group of Han Chinese people that
moved into the high elevation Himalayan mountains and became isolated from
the lowland human populations for many generations. When researchers
compared genetic information of Tibetans to Han Chinese populations, they
discovered many genetic differences. Which of the following genes is most
likely the reason Tibetans have higher oxygen saturation? (1 point)
OTP53, which helps cells control the cell cycle and prevent tumors
EPAS 1, which helps in the production of hemoglobin to transport oxygen in
the blood
O MCR1, which helps cells produce the pigment melanin that darkensin
O BRCA1, which helps cell repair damage to DNA