Biology · Biotechnology and Animal Husbandry

Consider the following statements regarding OPU–IVF–ET technology and indigenous bovine breeds: I. In OPU–IVF–ET technology, fertilization of ova takes place inside the uterus of the donor animal before embryo transfer. II. The Sahiwal breed is considered one of the best indigenous dairy cattle breeds in India. III. The Murrah buffalo is primarily a draught breed used for agricultural operations. IV. Tharparkar cattle are well adapted to arid conditions and are used for both milk production and draught purposes. How many of the above statements are correct?