Continuity mistake: Harris was born in 1997 (in season 9) so in 2018, that makes her 21 years old, but in the 2018 revival and its spinoff "The Conners", she is depicted as 17-18 years old and attending high school.
Roseanne (1988)
1 continuity mistake in season 10 - chronological order
Starring: John Goodman, Laurie Metcalf, Johnny Galecki, Sarah Chalke, Roseanne Barr, Michael Fishman
Continuity mistake: When Roseanne & Jackie talk about Arnie, they act like they haven't known him long. Jackie even states, "I don't know him." Yet, in episode "Why Jackie Becomes a Trucker," Jackie sleeps with Arnie. Roseanne says all the girls made a pact in high school that none of them would ever sleep with him.
More quotes from Roseanne
Trivia: Shelley Winters plays Estelle Parsons' mother in the series, even though in real life she's only seven years older than Parsons.
Question: Was Sara Gilbert (Darlene) pregnant in real life when she was pregnant on the show?
Answer: No. Sara Gilbert has given birth to one child (so far) and that was in 2007.