Question: The P50 for hemoglobin saturation in diving emperor penguins,
Aptenodytes forsteri, has been meas…


The P50 for hemoglobin saturation in diving emperor penguins,
Aptenodytes forsteri, has been measured to be 28 mmHg at pH 7.5
compared with a normal P50 for the domestic chicken,Gallus gallus
domesticus, of ~46 mmHg at pH 7.5 (standard conditions). Draw and
label an oxygen dissociation curve that shows the affinities for
both of these species. Why are these lines different? Based on the
O2 dissociation curve you have drawn, explain the adaptive
advantage of the lower P50 in the penguins

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