question_answer 13)

    The method of directly injecting a sperm into ovum in assisted by reproductive technology is called (a) GIFT                                (b) ZIFT                                 (c) ICSI                                  (d) ET

Answer:

                    (c) ICSI (Intra Cytoplasmic Sperm Injection) is a specialized procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum placed in a nutrient broth. GIFT (Gamete Intra Fallopian Transfer) is a method to transfer an ovum collected from a donor into the Fallopian tube of another female who cannot produce one, but can provide suitable environment for fertilization and further development. ZIFT (Zygote Intra Fallopian Transfer) is a method (similar to in vitro fertilization and embryo transfer in which the zygote (early embryo) up to 8 blastomeres is transferred directly into the Fallopian tube. ET (Embryo Transfer) is a method in which the fertilization is done in vitro and the formed zygote is transferred into the uterus of the female who cannot conceive.