REQUIRED119.In humans, there are four blood types: A, B, AB and O. The blood type is dependent on the type of antigen present on red blood cells (A, B, or both). Individuals that lack the antigens are type O. This is the recessive trait. A and B are both equally dominant and both antigens can be expressed, which results in AB blood type. This is an example of
Question
REQUIRED119.In humans, there are four blood types: A, B, AB and O. The blood type is dependent on the type of antigen present on red blood cells (A, B, or both). Individuals that lack the antigens are type O. This is the recessive trait. A and B are both equally dominant and both antigens can be expressed, which results in AB blood type. This is an example of
Solution
This is an example of codominance. In genetics, codominance is a phenomenon where two versions (alleles) of a gene contribute to the phenotype of an organism. In the case of the AB blood type, the A and B alleles are both expressed equally, making neither one dominant or recessive. This results in the codominant expression of both antigens.
Similar Questions
Blood type in humans is determined by the type of carbohydrate present on the red blood cells.A red blood cell may have carbohydrate A (IA), carbohydrate B (IB), or no carbohydrate (i).Carbohydrate A and carbohydrate B are codominant to each other and both A and B arecompletely dominant to the allele for no carbohydrate.
Individuals with O type blood: A. Have circulating antibodies against both the A and B blood group antigens. B. Do not have antibodies against either A, B or O blood group antigens. C. Are susceptible to infection because they lack circulating antibodies. D. Can safely receive A, B, AB and O type donor blood.
Blood type in humans is determined by the type of carbohydrate present on the red blood cells.A red blood cell may have carbohydrate A (IA), carbohydrate B (IB), or no carbohydrate (i).Carbohydrate A and carbohydrate B are codominant to each other and both A and B arecompletely dominant to the allele for no carbohydrate.7. How many phenotypes are possible for this situation?
When an individual has blood type AB, both A and B antigens appear on their red blood cells. This is an example of _____.Group of answer choicescomplete dominanceincomplete dominancecodominanceNext
What type of antigens are found on the surface of red blood cells of a person with type AB blood?Multiple ChoiceBoth antigens A and BNeither antigens A nor antigens BAntigens B onlyAntigens A only
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