- A Fertilization that takes place mainly within a laboratory culture dish setting before transfer under most conditions encountered
- B Retrieval of eggs and sperm which are then placed directly into the fallopian tube for in vivo fertilization
- C Direct microinjection of a single sperm cell into the cytoplasm of a retrieved egg cell as frequently observed in practice
- D Transfer of an embryo that has already formed into the cavity of the uterus directly in many documented cases
Correct answer: B. Retrieval of eggs and sperm which are then placed directly into the fallopian tube for in vivo fertilization
Explanation: GIFT: eggs and sperm are collected, mixed, and transferred directly into the fallopian tube where fertilization occurs naturally. Unlike IVF, fertilization occurs in vivo (inside the body). Used when fallopian tubes are functional but other infertility issues exist.
Concept context
Male and female reproductive systems, gametogenesis, fertilization, implantation, pregnancy, and reproductive health.