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mars1129 [50]
2 years ago
13

3

Biology
1 answer:
BARSIC [14]2 years ago
8 0

Anwser A and d

Explanation:

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A parent with the blood type A (genotype AO) and a parent with blood type B (genotype BO) have children with blood types A, B, a
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The ABO blood group system is used by humans. This blood group type is controlled by multiple alleles. Alleles A and B are both dominant over allele O but are co-dominant. Co-dominance is a type of inheritance pattern in which two alleles of a gene both express themselves i.e. neither is recessive.

This is the case of this family whose parents have a genotype of AO (blood type A) and BO (blood type B) respectively. The children have blood types A, B, and AB. However, the child with genotype AB possesses both the A and B allele, which are both expressed in his blood group (phenotype), hence, it can be said that the child is exhibiting CO-DOMINANCE for the blood group trait.

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