The haemoglobin of a human foetus

has only 2 protein subunits instead of 4

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has a higher affinity for oxygen than that of an adult

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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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Solution

The correct option is B has a higher affinity for oxygen than that of an adult
The foetus gets all of its nutrients and oxygen from the mother. Foetal haemoglobin, having higher affinity for oxygen than adult haemoglobin, helps access oxygen efficiently from the mother's bloodstream.

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Haemoglobin of human foetus

Define foetus. After how many weeks of development, a human embryo is said to become a foetus?

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