Advantages * Cloning sheep can help organ transplants. when people need transplants,they are often waiting a long time to get a donor Even some die before they find someone. They can use animals such as sheep to help people, so they don't have to wait as long. * Cloning dolly the sheep gave the idea that experts, such as scientists, could help endangered species by genetically engineering them so more of them come to life.
Disadvantages * one of the biggest disadvantages of Dolly is that technology is still not 100% right. so even though Dolly turned out okay, she still died of a rare disease for sheep. * Another disadvantage is that even though Dolly was okay hundreds of sheep before died or came out deformed when they tried this experiment.