高中英语:unit 2 cloning reading 课件 人教版选修8
高中英语:unit 2 cloning reading 课件 人教版选修8第3页

 1. What is clone? Clone is a way of making an exact copy of another animal and plant. 2. How is clone produced? This happens in plants when gardeners take cuttings from growing plants to make new ones, and when small parts of a plant are taken and grown in a laboratory. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.