A CRISPR spin-off causes unintended typos in DNA
Gene editors that target DNA bases may not be as safe as thought
![DNA editing](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/03/030519_ti_base-editor_feat_free.jpg?fit=860%2C460&ssl=1)
TOUCHING BASES A molecular tool that alters one DNA letter at a time may be overzealous, editing spots in the DNA it was never intended to change.
andriano_cz/istock.com