![Scientist and Polymerase chain reaction (PCR) machine.](http://static.sciencelearn.org.nz/images/images/000/003/051/full/TRCOWS_ITV_MakingA_TransgenicAnimal_PCR-Machine.jpg?1674169722)
To establish whether a newborn calf is a transgenic animal, scientists use PCR. PCR can quickly establish whether the transgene is present or absent in the calf’s DNA.
To establish whether a newborn calf is a transgenic animal, scientists use PCR. PCR can quickly establish whether the transgene is present or absent in the calf’s DNA.