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What Is Gestation?

Haemoglobin o...

Question

Haemoglobin of human foetus

A

has a lower affinity for oxygen than that of the adult

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B

same oxygen affinity as that of adult Hb

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C

has only 2 protein subunits instead of 4

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D

has higher oxygen affinity than that of adult.

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Solution

The correct option is D
has higher oxygen affinity than that of adult.

Foetal Hb has 2 alpha and 2 gamma chains in globiin whereas adult Hb has 2 alpha and 2 beta chains. Foetal Hb has a higher affinity for oxygen and it’s oxyhaemoglobin dissociation curve will have a leftward deviation.

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