sperm

In 1975, he wrote a paper titled “The Case for Passive Eugenics” and would later, in a letter to eugenicist Robert Graham, a millionaire businessman known for starting a sperm bank for geniuses, clarify his goals.

As for ethical concerns, Georgie said, surrogacy "felt like the last step" in their IVF journey using "Ben's sperm, a donor egg and a surrogate carrier".

IVF - or in vitro fertilisation - is when an egg is removed from a woman's ovaries and fertilised with sperm in a laboratory.

Officials said the development was important as it has opened up the possibility of creating a sperm bank.

She hopes to use them if she meets someone, or if she reaches a financial situation where she can "go it alone" with the aid of a sperm donor.