This is the genealogy of the programming language Scheme:

Scheme is a child of Lisp.
Scheme was born in year 1975.
It became Scheme MIT in year 1978.
It became Scheme 84 in year 1984.
It became Scheme IEEE in year 1990.
It became Scheme R5RS in year 1996, and has not changed much since that time.

This genealogy is brought to you by the Programming Languages Genealogy Project.