Deer mouse (Peromyscus maniculatus)
The deer mouse have a few adaptations and one of them is that they can live in low land and high lands and this is because they have adapted the haemoglobin polymorphism that they have utilized and they have a low amount of the haemoglobin in the blood. deer mice that lived in high altitude have the highest blood oxygen and this is in relation to the lower p50 amount. The deer mice are also adapted to take oxygen at low pressure and it's important for them not to shift the oxygen dissociation curve too far to the left as this will result in an inability to release oxygen into their tissues. Also they have similar blood oxygen affinity to the Llama. The reason it's able to be adapted in high altitudes is their ability to extract a good amount of oxygen from the concentration of DPG, the adaptation of altering the DPG to hemoglobin ratios is genetic. The deer mouse live in north America and the desert areas, they are adapted to live in almost any environment, this is useful for food sources and to be able to move for more food and not have as much competition for the food this ensures their species is more likely to thrive and not go extinct.