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4. In polygenic inheritance trait which controlled by three pairs of genes. Two individuals which are heterozygous for three alleles, crossed each other. Such type of cross produces what phenotypic ratio :- 11) 1:2:1 (2) 9:3: 3:1 73) 1:4:6:4:1 *4) 1:6 : 15 : 20 : 15 : 6:1 E_2\01-GENETICS\O2-EXERCISE.PSS

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