Class 10 Science Biology Heredity and Evolution



Multiple alleles are characterized by
(a)
More than two alternate forms of genes found at different loci
(b)
More than two alternate forms of genes found on same loci
(c)
One gene occurs in two chromosomes
(d)
None of the above
Correct answer: (b) 
Solution: Multiple alleles are defined as more than two alternate forms of genes found on the same loci. These are a type of non-Mendelian inheritance pattern that involves more than just the typical two alleles that usually code for a certain characteristic in a species. With multiple alleles that means there is more than two phenotypes available depending on the dominant of recessive alleles that are available in the trait and the dominance pattern the individual alleles follow when combined together.
Example, blood group in humans.
So, the correct answer is 'More than two alternate forms of genes found on same loci'

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