GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Type A
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Type AB
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Type O
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Type B
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Detailed explanation-1: -In people, one codominant trait that you can’t really observe by looking at a person, but many people know about themselves, is blood type. People with the AB blood type have one A allele and one B allele. Because both alleles are expressed at the same time, their blood type is AB.
Detailed explanation-2: -In the ABO blood type system in humans, blood type AB is an example of codominance. It implies that both dominant alleles are present and expressed together.
Detailed explanation-3: -AB blood type is codominant because the red blood cells have the products of both the A and the B alleles of the ABO gene.
Detailed explanation-4: -When two alleles of the same gene are expressed simultaneously, it is called codominance. Yes, codominance occurs in humans. This can be seen in human blood groups. In ABO type of blood group system, allele A and allele B are dominant over allele O and are expressed as AB when present together.
Detailed explanation-5: -Human blood type is determined by codominant alleles. There are three different alleles, known as IA, IB, and i. The IA and IB alleles are codominant, and the i allele is recessive. The possible human phenotypes for blood group are type A, type B, type AB, and type O.