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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describes an allele that masks the phenotypic effect of the other
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the case in which the hetero-zygote displays characteristics of both alleles.
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describes the genotype of a trait for which the two alleles an individual carries are the same
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None of the above
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Detailed explanation-1: -Codominance occurs when both alleles show dominance, as in the case of the AB blood type (IA IB) in humans. Furthermore, the human ABO blood groups represent another deviation from Mendelian simplicity since there are more than two alleles (A, B, and O) for this particular trait.
Detailed explanation-2: -Codominance, as it relates to genetics, refers to a type of inheritance in which two versions (alleles) of the same gene are expressed separately to yield different traits in an individual.
Detailed explanation-3: -In codominance a heterozygous individual expresses both simultaneously without any blending. An example of codominance is the roan cow which has both red hairs and white hairs. In incomplete dominance a heterozygous individual blends the two traits.
Detailed explanation-4: -Codominance Definition Codominance is a form of inheritance wherein the alleles of a gene pair in a heterozygote are fully expressed. As a result, the phenotype of the offspring is a combination of the phenotype of the parents. Thus, the trait is neither dominant nor recessive.
Detailed explanation-5: -If both alleles are dominant, it is called codominance?. The resulting characteristic is due to both alleles being expressed equally. An example of this is the blood group AB which is the result of codominance of the A and B dominant alleles.