Dolly the Sheep creator calls for biobank to save endangered animals

Sir Ian Wilmut said building an ‘ark’ that preserves material from at-risk species could save them from extinction A modern-day “ark” that holds tissues from endangered animals should be built as an insurance policy to save species from extinction, Sir Ian Wilmut, the creator of Dolly the Sheep, has said.A biobank that preserves sperm, eggs and other material from at-risk animals would ensure that scientists had the biological tissues at hand to resurrect extinct creature