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Which of the following statements is true?

AB blood type is an example of codominance.
Intelligence is controlled by a single gene.
Tt and tt plants have the same phenotype.
In codominance, both genes are recessive.

Sagot :

Answer: AB blood type is an example of codominance

Explanation:

The AB blood group is inherited as a result of codominance. If a person receives one group A allele from one parent and one group B allele from the other, both the A and B alleles are expressed, and the individual's blood group is AB.