monogenesis

Noun

 * 1)  The theory that mankind originated with a single ancestor or ancestral couple.
 * 2)  The theory that all languages, or a particular set of languages, originated from a single source.
 * 3)  Development of the ovum from a parent like itself.
 * , which involves only one parent.
 * 1) The emergence from a single cause or origin.
 * 1) The emergence from a single cause or origin.