The haemoglobin of human foetus
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has a lower affinity for oxygen than that of the adult
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its affinity for oxygen is the same as that of an adult
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has only 2 protein subunits instead of 4
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has a higher affinity for oxygen than that of an adult
D.
has a higher affinity for oxygen than that of an adult
Haemoglobin is the protein that makes red blood corpuscles red and binds easily and reversibly with oxygen. Normal values for haemoglobin are 14-20 g/100 mL of blood in infants, 13-18g/100 mL in adult male and 12-16 g/100 mL in adult females. Haemoglobin is made up of protein globin bound to the red haem pigment. The globin consists of four polypeptide chains-2 alpha and 2 betas. Foetal haemoglobin does not sickle even in those destined to have sickle cell anaemia, ie, haemoglobin of foetus has a higher affinity for oxygen than that an adult.
