AIIMS 2019 Zoology Assisted Reproductive Technologies MCQ Question
In IVF method, popularly known as test tube baby programme, ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and introduced to form zygote under simulated conditions in the laboratory. The zygote or early embryos (with upto 8 blastomeres) could be transferred into the fallopian tube (ZIFT) and embryos with more than 8 blastomeres into the uterus (IUT). This is in vitro fertilization (IVF⁻fertilisation outside the body in the almost similar condition as that in the body) followed by embryo transfer (ET).
ZIFT
IUT
GIFT
ICSI
Correct Answer
Detailed Explanation
In the context of in vitro fertilization (IVF), ICSI (Intracytoplasmic Sperm Injection) is a technique where a single sperm is directly injected into an ovum, which is particularly useful in cases of male infertility or when sperm quality is compromised. This method allows for successful fertilization when traditional IVF may not be effective.
In contrast, ZIFT (Zygote Intrafallopian Transfer) involves transferring a zygote into the fallopian tube, while IUT (Intrauterine Transfer) refers to placing embryos with more than 8 blastomeres into the uterus. GIFT (Gamete Intrafallopian Transfer) involves placing both sperm and ova into the fallopian tube, allowing fertilization to occur naturally. Thus, while ZIFT and IUT focus on embryo transfer, ICSI specifically addresses fertilization at a cellular level.
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