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Fruit colour in squash is an example of:

1. Recessive epistasis
2. Dominant epistasis
3. Complementary genes
4. Inhibitory genes

Correct answer: Dominant epistasis

Solution

Fruit colour in squash is a classic case of dominant epistasis because a dominant allele at one gene masks the expression of another gene involved in colour formation. This interaction alters the expected Mendelian ratio.

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