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Genome-edited bull passes on hornless trait to calves

For the past two years, researchers have been studying six offspring of a dairy bull, genome-edited to prevent it from growing horns. Scientists report that none of the bull's offspring developed horns, as expected, and blood work and physical exams of the calves found they were all healthy. The researchers also sequenced and analyzed the genomes of the calves and their parents looking for any unexpected changes.

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