What is pleiotropy?
Pleiotropy (or pliotropy) is the occurrence in which a single gene conditions several dissimilar phenotypical traits.
Some phenotypical traits might be sensitive to pleiotropic effects (for instance, inhibition) of other genes, even when conditioned by a pair of alleles in simple dominance. In these cases a mixture of pleiotropy and gene interaction is characterized.
Image Diversity: pleiotropy