1. one of two or more alternative forms of a gene that occupy the same position on a chromosome and control the same trait
Usage: genetics; also called allele (more common modern term)

Examples

• In pea plants, the allelomorph for tall height and the allelomorph for short height are alternative forms of the same gene.
• Mendel's experiments showed how different allelomorphs are inherited from parent plants to offspring.
• The two allelomorphs for eye color can produce different phenotypes depending on which combination an organism inherits.
• Scientists use the term allelomorph to describe variant genes at identical loci on homologous chromosomes.
• An organism with two different allelomorphs for a trait is said to be heterozygous.