In humans, the polymorphic gene 'I' has three multiple alleles which are the result of:

Explanation

Option D is correct. The polymorphic gene 'I' in humans has three multiple alleles, which are the result of mutation. The three alleles are IA, IB, and i. The IA allele is responsible for the production of the A antigen, the IB allele is responsible for the production of the B antigen, and i allele is responsible for the production of neither antigen. The blood type that an individual has is determined by the alleles that they inherit from their parents. If an individual inherits two IA alleles, they will have type A blood. If an individual inherits two IB alleles, they will have type B blood. If an individual inherits one IA allele and one IB allele, they will have type AB blood. And if an individual inherits two i alleles, they will have type O blood. The three alleles of the I gene are the result of mutations that have occurred in the gene over time. Mutations are changes in the DNA sequence that can be caused by a number of factors, including exposure to radiation or chemicals. Mutations can be harmful, beneficial, or neutral. In humans, the gene I, which codes for the blood group antigens, has three alleles: IA, IB, and i. These alleles are located on the 9th chromosome which is sex-linked. The IA and IB alleles are dominant over the i allele. This means that if an individual inherits one IA allele and one i allele, they will have type A blood. If an individual inherits one IB allele and one i allele, they will have type B blood. If an individual inherits two i alleles, they will have type O blood. The IA and IB alleles are also sex-linked. This means that they are located on the X chromosome, and males only have one X chromosome. Females have two X chromosomes, so they can have two copies of the IA or IB allele, or one copy of each.The polymorphic gene 'I' in humans has three multiple alleles, which are the result of complete dominance. The three alleles are IA, IB, and i. IA is the allele that is responsible for the production of the A antigen. IB is the allele that is responsible for the production of the B antigen. i is the allele that is responsible for the production of neither antigen. The blood type that an individual has is determined by the alleles that they inherit from their parents. If an individual inherits two IA alleles, they will have type A blood. If an individual inherits two IB alleles, they will have type B blood. If an individual inherits one IA allele and one IB allele, they will have type AB blood. And if an individual inherits two i alleles, they will have type O blood.