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Discover LudwigThe phrase 'biological son' is correct and usable in written English.
It is usually used to distinguish a son that came from a pregnancy between two people from a son that was adopted. For example: John had two sons, a biological son from his first marriage and an adopted son from his second marriage.
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They also have a biological son, Peter.
Having a biological son, you assure us, is the most transformational experience you've ever had.
Ms. Leekin has a biological son, Desmond Leekin, living in Port.
Nicole Berner-Kadopteddopted Matan, the biological son of her partner, Ruti Berner-Kadish, in California.
I leaned toward my computer and, for the first time, saw my husband's biological son.
Their 13-year-old biological son has felt so much stress that he has required therapy.
Mr. Farrow is the only biological son of Mia Farrow and Woody Allen.
Mark, 48, Jean, 37, and Candi, 34, now have two children — Mark (named after his father) is Candi's biological son, and another boy, Joseph, now 7 months old, is Jean's biological son.
As in Sebald's novel, Zafar talks about displacement, homelessness, and his discovery that he is not his parents' biological son.
Although Wally doesn't know it yet, that adorable 6-year-old, Sebastian Thomas Robinsonn), is his biological son.
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Oh, and she's also a mom who is making out with her non-biological son.
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CEO of Professional Science Editing for Scientists @ prosciediting.com