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Multiple Choice
Which form of inheritance is determined by more than two alleles?
A
Incomplete dominance
B
Codominance
C
Polygenic inheritance
D
Multiple alleles
Verified step by step guidance
1
Begin by understanding the concept of alleles. Alleles are different forms of a gene that can exist at a specific locus on a chromosome.
Recognize that most genes have two alleles, one inherited from each parent. However, some genes can have more than two alleles, which is referred to as multiple alleles.
Consider examples of multiple alleles, such as the ABO blood group system in humans, where the gene responsible for blood type has three alleles: A, B, and O.
Differentiate between multiple alleles and other forms of inheritance. Incomplete dominance involves a blending of traits, codominance involves both traits being expressed equally, and polygenic inheritance involves multiple genes affecting a trait.
Conclude that multiple alleles refer to a situation where a gene has more than two allelic forms, allowing for a greater variety of genetic combinations and phenotypes.