Part 1 of Essay
? The first attempt in cloning was conducted in 1952 on a group of frogs. The experiment was a partial success. The frog cells were cloned into other living frogs however, only one in every thousand developed normally , all of which were sterile. The rest of the frogs that survived grew to abnormally large sizes. In 199 ....

Part 2 of Essay
.... three or four, thechances of a successful pregnancy would increase significantly"(Elmer- Dewitt 38). The experiment the scientists performed is the equivalent of a mother producing twins. The process has been practiced and almost perfected in livestock for the past ten years, and some scientists believe that it seems only logical that it would be the next step in in-vitro fertilization. The procedure was remarkably simple. Hall and Stillman "selected embryos that were abnormal because they came from eggs ....