Two or more independent genes present on different chromosomes which determine nearly same phenotype are called

Supplementary genes

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Complementary genes

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Duplicate genes

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None of the above

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Solution

The correct option is B Duplicate genes
Duplicate genes or factors are two or more independent genes present on different chromosomes which determine the same or nearly same phenotype so that either of them can produce the same character. The independent genes do not have cumulative effect. They produce the same phenotype whether present in homozygous or heterozygous state. As a result dominant phenotype is more abundant. $F_{2}$ ratio is 15:1.
So, the correct answer is 'Duplicate genes'.

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