Descendant

Descendants were lifeforms who followed from ancestors, beginning with their offspring (TV: The Dalek Invasion of Earth, The Stolen Earth) and continuing through successive generations. (TV: The Ark)

On Vortis, the Optera were descended from the Menoptera. (TV: The Web Planet)

The Slitheen-Blathereen family of Raxacoricofallapatorius were the descendants of an inter-clan marriage between the families Slitheen and the Blathereen. (TV: The Gift) Similiarily, a Hanazeen-Blathereen family also existed. (PROSE: A Comedy of Terrors)

Jabe of the Forest of Cheem claimed to be a descendant of Earth's tropical rainforest. (TV: The End of the World)