Before gene-edited babies, Chinese scientists created super-strong dogs and autistic monkeys

Following Chinese scientist He Jiankui’s claim this week to have created the world’s first genetically edited babies – twin girls Nana and Lulu – the use of the technology that made this possible has come under international scrutiny.

Here are some of the other ways Chinese scientists have used CRISPR-Cas9 (CRISPR being short for clustered regularly interspaced short palindromic repeats) to edit genomes: