When Courtney McKinney was 16 years old, she learned that she’d been conceived through anonymous sperm donation.  

As an adult, Courtney discovered she had a half-sister—Alexandra Sanchez.

Theirs is one of the many families that have expanded as a result of online DNA testing.

At StoryCorps, Courtney told Alex how she’d set out looking for her father, and about the moment she found a sister instead.

Alex&Courtney5

Top photo: Alexandra Sanchez (left) and Courtney McKinney at their StoryCorps interview in Dallas on April 29, 2018. Credit: Kevin Oliver/StoryCorps
Bottom photo: Sisters Courtney and Alex on the first day they met each other in person. Courtesy of Alexandra Sanchez.

Originally aired June 15, 2018 on NPR’s Morning Edition.