<P> Pierce has been described as "perky" and "chatty", as well as focusing mostly on her academic career rather than social life, causing her to be socially inept at times and childlike . She graduated from high school and medical school early, and becomes the head of her department at the young age of 31 years old . McCreary was well received upon her introduction . </P> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Maggie is first introduced in the penultimate episode of the tenth season . Cristina Yang (Sandra Oh) interviews various different candidates to replace her as the head of her department in Cardiothoracic surgery . Maggie, having finished high school and medical school early, becomes head of her department at 31 years old . It is revealed in the season 10 finale "Fear (of the Unknown)", Maggie's biological mother was Ellis Grey . Richard Webber is shocked by this, knowing he is her biological father . Throughout the eleventh season, Webber struggles to deal with the revelation and keeps it from Maggie . Maggie explains that 2 years prior, she looked for her birth mom and needed to go to the court for the records . She found out that she was dead, but got her name, and discovered that she was an amazing surgeon that worked at the Seattle Grace Hospital . She stated that that's not why she took the job, but it's "a little bit" why she took the interview . </P>

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