GCSE Biology 1: When is the IO allele expressed in the blood group phenotype?

Question

When is the IO allele expressed in the blood group phenotype?

daavide · Accepted Answer

The IO allele is expressed in the blood group phenotype only if two copies of it are inherited (recessive), one from each parent, resulting in blood group O.

GCSE Biology 1

When is the IO allele expressed in the blood group phenotype?

The IO allele is expressed in the blood group phenotype only if two copies of it are inherited (recessive), one from each parent, resulting in blood group O.

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