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Deer mice (Peromyscus maniculatus) have structurally different forms of Hb, depending upon whether they live at high or low altitude. A group of researchers collected deer mice from high and low altitude populations and drew blood from the mice. The oxygen binding properties of Hb from high altitude-dwelling and low altitude-dwelling mice were compared at 37°C and pH 7.4. Data from this comparison are given in the table below.Using the data in the table below, draw a graph showing how the saturation of Hb binding sites changes as the partial pressure of oxygen changes. Points for Hb-B1 and Hb-B2 should be plotted on the same graph. - - in the table indicates no data were collected at that PO2 for that type of Hb.
PO2 (torr)
Percent saturation of Hb-B1
Percent saturation of Hb-B2
0
6
39
--
6.5
24
7
50
9.0
62
40
12
72
60
15
70
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