Fruit color and in summer squash or Cucurbita pepo is example for dominant epistasis

Fruit colour in squash is an example of
A. Recessive epistasis
B. Dominant epistasis
C. Complementary genes
D. Inhibitory genes?

Explanation:
The colour of fruit in squash is determined by the interaction of genes and their alleles. Let's explore each option to determine which one is the correct answer.

A. Recessive epistasis:
Recessive epistasis occurs when the presence of a homozygous recessive genotype at one locus masks the expression of alleles at another locus. In this case, the expression of fruit colour would be blocked by the presence of a recessive allele. However, this does not seem to be the case in squash fruit colour.

B. Dominant epistasis:
Dominant epistasis occurs when the presence of a dominant allele at one locus masks the expression of alleles at another locus. If squash fruit colour was an example of dominant epistasis, it would mean that the presence of a dominant allele at a specific locus determines the fruit colour. However, this does not align with the known genetics of squash fruit colour.

C. Complementary genes:
Complementary genes are non-allelic genes that interact to produce a particular phenotype. In the case of squash fruit colour, it is not solely determined by the presence or absence of a single gene, but rather the interaction of multiple genes. Therefore, squash fruit colour is not an example of complementary genes.

D. Inhibitory genes:
Inhibitory genes refer to genes that suppress or inhibit the expression of other genes. In the case of squash fruit colour, it is unlikely that inhibitory genes are involved as they would suppress the expression of colour genes, resulting in a lack of fruit colour. This is not consistent with the observed fruit colour in squash.

Conclusion:
Based on the analysis above, the correct answer is none of the options provided. The colour of fruit in squash is determined by a complex interaction of multiple genes, and it is not accurately represented by any of the given options. Therefore, none of the options A, B, C, or D are applicable to the example of fruit colour in squash.