(CNN) — It’s tiny, but this lab mouse could have a mammoth impact. With curly whiskers and wavy, light hair that grows three times longer than that of an ordinary lab mouse, the genetically ...

Relying on CRISPR, they then took both the stem cell and zygote approach to rewriting the mouse’s stem cell to express those traits. The next steps involved more than a little hit and miss.

light hair that grows three times longer than that of an ordinary lab mouse, the genetically modified rodent embodies several woolly mammoth-like traits, according to Colossal Biosciences. The private ...