Scientists alter dairy cattle DNA

Tweak designed to spare animals painful horn removal

Posted: July 21, 2018 at 2:05 a.m.

Dan Carlson, a senior vice president at Recombinetics, stands next to a bull named Buri in May at the University of California in Davis. Because of gene editing, Buri was born without the ability to grow horns.

For nine nerve-racking months beginning in the summer of 2014, Dan Carlson waited for his lab experiments to be born.

This story is only available from our archives.