Sean Lennon has indicated he'll take legal action against anyone who tries to clone his father John Lennon.
He's branded plans to clone Lennon from DNA extracted from the late Beatle's teeth as "bizarre, futuristic and dystopian''.
Last year Canadian dentist Michael Zuk handed a rotten molar from the singer to scientists so they could extract Lennon's genetic code.
Zuk - who purchased the tooth for US$30,000 (NZ$34,777) - hopes experts will one day be able to clone the singer.
However, Sean Lennon has hinted any attempt could end up in the courts.
"It's interesting thinking about what rights we have over our discarded DNA. Cloning in general is a legal area that's bizarre, futuristic and dystopian - and this about my dad's tooth definitely falls into that category,'' he told NME magazine.