Members of the public broadly support the creation of IVF babies with three genetic parents in order to defeat inherited disease.
A majority of Britons back controversial mitochondrial replacement techniques that could affect generations to come, fertility regulators found.
However, a large proportion of people were unsure or undecided about what they thought of the currently illegal procedures.
Results from a major consultation by the Human Fertilisation and Embryology Authority were delivered to the Government today, as well as policies and safeguards for treatments.
However, they fell short of recommending the move permitting children to be conceived with the help of DNA donated by a second "mother".
Experts believe mitochondrial replacement could lead to the eradication of serious inherited diseases, but critics argue that it could be the beginning of eugenics.