Question: The passage given below is followed by four summaries. Choose the option that best captures the author’s position.
Artificial embryo twinning is a relatively low-tech way to make clones. As the name suggests, this technique mimics the natural process that creates identical twins. In nature, twins form very early in development when the embryo splits in two. Twinning happens in the first days after egg and sperm join, while the embryo is made of just a small number of unspecialized cells. Each half of the embryo continues dividing on its own, ultimately developing into separate, complete individuals. Since they developed from the same fertilized egg, the resulting individuals are genetically identical.
The main points of the paragraph are – artificial embryo twinning is a low-tech way to make clones which is similar to the natural process that creates twins. Option 1 is incorrect as it states that twins are formed during fertilization in the natural development. However, as per the paragraph, twins are formed during the first few days of fertilization in twinning. Thus it can be negated. Option 2 also implies that the embryo splits into two identical twins during natural development while this occurs during twinning as per the paragraph. Thus option 2 is also incorrect. Option 3 implies that the natural development of identical twins is high-tech as compared to twinning which is low-tech. This is not mentioned in the paragraph and so option 3 can be negated. Option 4 correctly captures the essence of the paragraph.