| position effect | |
| —n | |
| the effect on the phenotype of interacting genes when their relative positions on the chromosome are altered, as by inversion | |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a scrap or morsel of food left at a meal. |
position effect n.
Variation in the expression of a gene that results from changes in the gene's position along a chromosome.