half-sider
noun1
A bilateral gynandromorph, an animal that is one sex on the left and another sex on the right.
2
An animal that is one color on the left and another on the right.
- If the lost choromosome had been the one carrying the blue gene, then a visual half-sider would not have resulted, although the bird would still be a genetic half-sider, one side pure Light Green and the other side Light Green/blue.1961, Thomas Geoffrey Taylor, Cyril Warner, Genetics for Budgerigar Breeders, page 104: