Alison Van Eenennaam, a geneticist at UC Davis College of Agriculture and Environmental Sciences, poses with Spotigy and Buri, dairy calves genetically edited not to develop horns. Credit: Karin Higgins/UC Davis
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Spotigy, a transgenic dairy calf developed by Recombinetics, was born without the gene for horns. Credit: Cornell Alliance for Science

AFS_20150526_Iowa_096R
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Spotigy, a transgenic dairy calf developed by Recombinetics, was born without the gene for horns. Credit: Cornell Alliance for Science

AFS_20150526_Iowa_102R
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Spotigy, a transgenic dairy calf developed by Recombinetics, was born without the gene for horns. Credit: Cornell Alliance for Science

AFS_20150526_Iowa_103R
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Spotigy, a transgenic dairy calf developed by Recombinetics, was born without the gene for horns. Credit: Cornell Alliance for Science

AFS_20150526_Iowa_161R
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Spotigy, a transgenic dairy calf developed by Recombinetics, was born without the gene for horns. Credit: Cornell Alliance for Science

AFS_20150526_Iowa_171R
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