
If two-person with ′AB′ blood group marry and have a sufficiently large number of children, these children could be classified as ′A′ blood group. ′AB blood group ′B′ blood group in \[1:2:1\]ratio.
The modern technique of protein electrophoresis reveals the presence of both ′A′ and ′B′ type proteins in ′AB′ blood group individuals. This is an example of
A. Codominance
B. Incomplete dominance.
C. Partial dominance.
D. Complete dominance.
Answer
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Hint: In humans, the ABO blood group system is dominated by gene I, that has three alleles: \[{{I}^{A}}\], \[{{I}^{B}}\], \[i\]. Also, the co-dominant is \[{{I}^{A}}\], \[{{I}^{B}}\] and the recessive is \[i\]. Neither allele is recessive in co-dominant genes.
Complete answer: A specific molecule, called an antigen, is found on the surface of red blood cells, which is responsible for classifying blood into four distinct classes. A, B, AB, and O are these blood groups. A category of glycoproteins is the antigens present on the red blood cell surface. Two very different \[{{I}^{A}}\] and \[{{I}^{B}}\] give their expression, so it reflects codominance, because of the genes found on chromosome segments, the appearance of an individual. Genes are the units of inherited data that are responsible for many of the features of an individual. In various forms known as alleles, these genes for a particular trait, such as eye colour, exist. Humans also have genes or alleles, along with other living organisms, which are responsible for many features. For a flower, its colour can serve as an example of an allele or gene. The alleles can make red, pink, violet, etc. of the flower As dominant alleles, the alleles that often appear as a trait and are present are identified, and those that are covered by the dominant alleles are called recessive alleles. Ultimately, in certain cases where both alleles are expressed or appear, it is called codominance. Generally speaking, it is a genetic scenario where either a dominant or a recessive allele is not present and both are expressed equally. At the same time, all features or attributes are apparent. Remember, codominance is not the explanation of two distinct colored eyes in certain individuals. Blood group AB is distinguished by the presence of both antigen A and antigen B, i.e., \[{{I}^{A}}\], over the RBCs surface and \[{{I}^{B}}\]. Both alleles will express themselves here, creating antigens A and B. This is known as codominance.
Hence, the correct answer is A-Codominance.
Note: In humans, the ABO blood group system experiences multiple allelism and codominance. Multiple allelism is a condition in which three sets of alleles, instead of two, regulate a trait or a character or gene. Although a gene will be expressed in any human at a time by only two alleles. Co-dominance is a phenomenon when two separate alleles are expressed at the same time in a heterozygote. It is known that Karl Landsteiner discovered the ABO blood group system.
Complete answer: A specific molecule, called an antigen, is found on the surface of red blood cells, which is responsible for classifying blood into four distinct classes. A, B, AB, and O are these blood groups. A category of glycoproteins is the antigens present on the red blood cell surface. Two very different \[{{I}^{A}}\] and \[{{I}^{B}}\] give their expression, so it reflects codominance, because of the genes found on chromosome segments, the appearance of an individual. Genes are the units of inherited data that are responsible for many of the features of an individual. In various forms known as alleles, these genes for a particular trait, such as eye colour, exist. Humans also have genes or alleles, along with other living organisms, which are responsible for many features. For a flower, its colour can serve as an example of an allele or gene. The alleles can make red, pink, violet, etc. of the flower As dominant alleles, the alleles that often appear as a trait and are present are identified, and those that are covered by the dominant alleles are called recessive alleles. Ultimately, in certain cases where both alleles are expressed or appear, it is called codominance. Generally speaking, it is a genetic scenario where either a dominant or a recessive allele is not present and both are expressed equally. At the same time, all features or attributes are apparent. Remember, codominance is not the explanation of two distinct colored eyes in certain individuals. Blood group AB is distinguished by the presence of both antigen A and antigen B, i.e., \[{{I}^{A}}\], over the RBCs surface and \[{{I}^{B}}\]. Both alleles will express themselves here, creating antigens A and B. This is known as codominance.
Hence, the correct answer is A-Codominance.
Note: In humans, the ABO blood group system experiences multiple allelism and codominance. Multiple allelism is a condition in which three sets of alleles, instead of two, regulate a trait or a character or gene. Although a gene will be expressed in any human at a time by only two alleles. Co-dominance is a phenomenon when two separate alleles are expressed at the same time in a heterozygote. It is known that Karl Landsteiner discovered the ABO blood group system.
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