You may not have realised that Ross' son Ben was actually played by twins;
The part of Ben was actually played by four different actors throughout the show. The first, when Ben was born, was Michael Gunderson, before twin toddlers Charles Thomas Allen and John Christopher Allen took over. Finally, perhaps the most notable actor was Cole Sprouse who played an older Ben.
It took two little actors to portray Emma, twins Noelle and Cali Sheldon, and they have nothing but good things to say about their first acting role. The show may have ended almost two decades ago, but that doesn't mean that the twins have faded into the background.
Four different boys played Ben during the course of the show, beginning with Michael Gunderson who was Baby Ben.
Are Dylan and Cole Sprouse identical twins? Yes, they are identical twins. While most people might think that identical twins have to look alike in order to be considered as such, looks have nothing to do with whether or not they are considered as such.
“My brother and I both have ADHD, and I needed one-on-one attention from a tutor.” Getting their own sitcom on Disney Channel made their careers explode. “It was the golden ticket,” Sprouse says. “At the time, being the leads of a sitcom as kids was the most stable job we could think about in the industry.
Instead, it's more likely that Ben Geller stopped appearing in the series because of Cole Sprouse's developing career. He had never been a particularly regular or essential character. Since Ross didn't have full custody of his son, the show seemed to feel no need to explain the boy's absence after season 8.
More than likely, the writers had to pick concise storylines and Ben didn't fit in any of them at the time.
Perhaps a few more practical reasons for Ben's absence
There's also the very real possibility that Sprouse might have had conflicts with his schedule, which started to get much busier around 2002, when he appeared in his final Friends episode.
Both characters were played by Lisa Kudrow and, for the scenes where Phoebe and Ursula appeared together, the production crew used some good old TV magic and enlisted the help of her sister, Helene Marla Kudrow, to film believable joint scenes between Phoebe and her twin.
Emma isn't actually seen again, but it's expected that Rachel contacted her mother to ask her not to take the infant to Paris. Theoretically, with Ross and Rachel back together, Emma's co-parenting arrangement has changed to include both of her biological parents, rather than just one.
No, Lisa Kudrow doesn't have a twin sister. Lisa Kudrow has an elder sister, Helene Marla Kudrow, who is also associated with Friends. The production used Helene when they had to cast Ursula and Phoebe in the same frame.
Ben is played as an infant by Michael Gunderson, by twin brothers Charles Thomas Allen and John Christoper Allen from Season 3 to 5, and by Cole Sprouse from Season 6 to 8.
Ben is the son of Ross Geller and his ex-wife Carol. He was born in the second season of the show, and his birth was a significant moment for Ross's character. Throughout the series, Ben was portrayed as a sweet and curious child who loved spending time with his dad.
In early seasons of the show, Ben was played by Michael Gunderson, before twins Charles Thomas Allen and John Christopher Allen took over in season three. In season six, current Riverdale star Cole Sprouse then played Ben until the show finished.
Cole Sprouse was not the first actor to portray Ross and Carol's son, Ben, but he was certainly the most memorable. Sprouse starred as Ben Geller from season six to season eight of the series and was very young when he began working on the series, yet he reportedly was paid $20,000 per episode.
Another theory is that their characters were written out because the writers felt they weren't working well with the rest of the cast. However, there is no official explanation for their sudden disappearance. Carol and Susan became irrelevant as Ross had married and got divorced again.
Barone had originally auditioned for one of the main characters in Friends but was offered the recurring role of Carol instead. After playing her in one and only one episode, Barone quit, wanting to pursue a more full-time role, and she was replaced by Jane Sibbett.
"The more likely answer is that he was such a deadbeat father that he completely faded away from his son's life, pretending to his family and so-called friends that he still saw a boy he barely knew." As the final season of Friends wrapped up, it was never made clear if Ben and Ross maintained a relationship.
Co-creator David Crane explained that the cast was growing out of their respective roles, so the showrunners basically went into every season thinking it may well be the last. "Because of the actors' contract negotiations, and it seemed as though, 'Oh, season 7 is the last season. Or season 8.
Lovett suggests that Ross' emotional issues over the years -- which only escalated with each passing season -- resulted in him losing custody of Ben. If Ben was fully taken in by Carol and her partner, it would explain why Ross saw his son less and less over the years.
These studies showed that IQ is very heritable (although the environment still plays a role in determining your IQ). We can tell this because the IQ of identical twins are almost always the same and non-identical twins are only sometimes the same.
Because identical twins come from the exact same combination of egg and sperm, they have exactly the same combination of chromosomes. A DNA test would reveal that they have over 99.9% identical DNA.
Monozygotic (identical) twins will have the same blood type, with a few very rare exceptions. Dizygotic (fraternal) twins may have the same blood type, or they may have different types. Therefore, it may be concluded that twins with differing blood types are dizygotic, or fraternal.