Star Trek: The Next Generation Season 3 Episode 16
Stardate: 43657.0. Data becomes a father when he creates a Soong-type android in the form of a daughter named Lal. Issues are complicated when Lal starts showing signs of a more evolved consciousness, including the ability to feel emotions, which attracts the attention of Starfleet scientists who want to take her away from Data and examine her advanced systems.
Episode Title: The Offspring
Air Date: 1990-03-12