Question

Inheritance of ABO blood groups illustrate
a. Euploidy
b. Polyploidy
c. Incomplete dominance
d. Multiple allelism

Answer 1

We know people have different types of blood groups. We know that there exist four types of standard blood groups. However, along with these four blood groups there exists eight types of local blood groups. The other four are the combination of the first four blood groups in special circumstances. The blood group of ABO can be included in these special blood groups.

Complete answer:
- The multiple allelism is an example of a non- Mendelian inheritance pattern. We can say that the inheritance of ABO blood groups illustrates the process of multiple allelism.
- In biological terms, a solitary gene code for an enzyme is said to be responsible for the accumulation of sugar that remains to a precise glycoprotein on the sheath of red blood cells.
- According to the results of the recent research, the presence of three different alleles of this gene are known.
- The Euploidy is the circumstance in which a chromosome number is having an exact multiple of the haploid number. We can say that the polyploidy is a state in which the cells of a creature have more than two paired groups of chromosomes. Incomplete dominance is a condition in which the overriding allele, or existence of a gene, does not entirely cover the possessions of a retreating allele.

Hence, the correct answer is option (D).

Note: We need to know that from a single ancestor all three alleles have arisen by the process of the mutation. The blood group types A (IA), type B (IB), or type O is the multiple alleles. These types produce the phenotype of type A, type B, type AB, or type O blood. We know that these are four standard blood types. The genotype of AA, OA form blood group A. The genotype of BB, OB form blood group B. The genotype of AB, BA form the blood group AB. The genotype of OO forms blood group O.