The scientists modified ten genes in total in their mice, in different combinations. Interestingly, only three were changed to resemble genes found in the woolly mammoth.

The Colossal Woolly Mouse, born in October 2024, was genetically engineered to have characteristics that could eventually be used in creating a next-generation woolly mammoth embryo to be born by ...

The journey to the woolly mouse began with the woolly mammoth. Scientists at Colossal examined more than 100 genomes of Asian elephants and woolly mammoths. They lined up those genomes side by ...

The mice were created by Colossal Biosciences, which edits DNA for species conservation, and has been working to bring back the woolly mammoth since 2021.

Colossal Biosciences engineered mice with long, woolly hair by editing seven genes. Scientists see potential for conservation but doubt true "de-extinction." The company may apply the technique to ...

Scientists began with mice to see if the process works before possibly moving on to edit embryos of Asian elephants, the woolly mammoth's closest living relative.