Content provided by the US Census bureau for the years 2010, 2011, 2012, 2013, 20140and 2015.
Synteny. The presence of two or more genetic loci on the same chromosome. Extensions of this original definition refer to the similarity in content and organization between chromosomes, of different species for example.
Syndactyly is the medical term for webbed or conjoined fingers or toes. In most cases the fingers are connected only by skin. It is rare that the bones are also fused together.