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Q. More than two alternate forms of a gene present on the same locus are called $(i)$ ___. They are produced due to repeated $(ii)$ ___ of the same gene but in different directions. Their well known example is $(iii)$ ___ Which of the following correctly fills the above statement?
(i) (ii) (iii)
1 Epistatic genes crossing over polydactyly
2 Multiple alleles mutations human blood groups
3 Supplementary genes mutations hypertrichosis
4 Linked genes crossing over alkaptonuria

Principles of Inheritance and Variation

Solution:

Correct answer is (b) 2