1: Meredith Grey is the daughter of Ellis Grey, a renowned surgeon.

2: Her half-sister Lexie Grey is also a doctor at Seattle Grace Hospital.

3: Meredith's best friend, Cristina Yang, becomes her chosen family.

4: She adopts Zola, Bailey, and Ellis with husband Derek Shepherd.

5: Sister-in-law Amelia Shepherd is also part of the family.

6: Richard Webber acts as a father figure to Meredith.

7: Maggie Pierce, Ellis's biological daughter, joins the family.

8: Derek's sisters, Nancy and Kathleen, are part of Meredith's family.

9: Meredith's chosen family expands to include Alex Karev and Jo Wilson.