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What is a type of inheritance for the human blood type gene shown here? A. Incomplete dominance. B. Codominance. C. Autosomal. D. Sex-linked.

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budwilkins
IAIA IAiO IBIB IBiO IAIB iOiO
These are the blood types: A, A, B, B, AB, and O, respectively.
Since both A and B are dominant to O, which is recessive, they share the trait when both expressed (type AB).
This is called [B. Codominance.]

Answer;

B. Codominance.

Explanation;

  • Codominance is a type of inheritance in which alleles of a gene pair that is heterozygous are expressed fully. Thus the resulting phenotype is neither dominant or recessive.
  • Blood grouping is a good example of codominance; The genotypes; IAIA IAiO IBIB IBiO IAIB iOiO, are the blood types: A, A, B, B, AB, and O, respectively. Since both A and B are dominant to O, which is recessive, they share the trait when both expressed (type AB).


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