Genes which occur in the same order on the chromosome of different species.

Refers to a pair of genomes in which at least some of the genes are located at similar map positions.

All loci on one chromosome are said to be syntenic (literally on the same ribbon). Loci may appear to be unlinked by conventional genetic tests for linkage but still be syntenic.

two genes which occur on the same chromosome are syntenic; however, syntenic genes may or may not be "linked." [Source: NHBLI/NCBI Glossary

Synteny (a neologism meaning "on the same ribbon"; Greek: , syn = along with + , tainiā = band) describes the preserved order of genes between related species. During evolution, chromosomal rearrangement occurs and hence even closely related species have different patterns of synteny. In cytogenetics and comparative genomics, the disruption of synteny is an indication of divergent evolution.