In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube? [2010]a)Embryo only, upto 8 cell stageb)Either zygote or early embryo upto 8 cell stagec)Embryo of 32 cell staged)Zygote onlyCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

The baby produced by conceiving in a culture dish and nursing in the uterus is called a test tube baby. This method involves in vitro fertilisation (IVF), i.e., fertilisation of male and female gamete outside the body in almost similar conditions as that in the body followed by embryo transfer (ET). Either zygote or early embryo upto 8 blastomeres is transferred into the Fallopian tube (ZIFT - Zygote Intra Fallopian Transfer) to complete its further development. If the embryo is with more than 8 blastomeres, it is transferred into uterus (IUT - Intra Uterine Transfer) to complete its further development. So, correct option is B.

Answer

In vitro fertilization (IVF) or test-tube baby technique involves fertilizing one or more eggs outside the body and then transferring the fertilized eggs known as pre-embryos back into the uterus. Zygote Intra Fallopian Transfer (ZIFT) is an example of IVF. In this, the zygote or early embryos upto 8 blastomeres are transferred into the Fallopian tube. If the embryo has more than 8 blastomeres then it is transferred into uterus called as IUT.

Answer

Explanation:

What is in vitro fertilisation (IVF) and the process involved?
In vitro fertilisation (IVF) is a technique used to help couples with fertility issues to conceive a child. The process involves fertilising an egg with sperm outside the body, in a laboratory dish, and then transferring the resulting embryo into the woman's uterus.

What is transferred into the fallopian tube during IVF?
- Embryo only, up to 8 cell stage: This option is not correct because in IVF, it is common to transfer either a zygote (fertilised egg) or an early embryo up to the 8 cell stage into the fallopian tube.
- Either zygote or early embryo up to 8 cell stage: This is the correct answer. During IVF, either a zygote (fertilised egg) or an early embryo up to the 8 cell stage is transferred into the fallopian tube to allow for implantation and pregnancy to occur.
- Embryo of 32 cell stage: This option is not correct as typically embryos up to the 8 cell stage are transferred in IVF.
- Zygote only: This option is not correct as both zygotes and early embryos up to the 8 cell stage can be transferred during IVF.
Therefore, the correct answer is option B - Either zygote or early embryo up to 8 cell stage is transferred into the fallopian tube during in vitro fertilisation.

Top Courses for Class 12

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams