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Question
Briefly explain IVF and ET What are the conditions in which these methods are advised?
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Solution
IVF and ET refers to In vitro Fertilisation and Embryo Transfer. Gametes from the male and female are collected hygienically and induced to fuse in the laboratory set up under simulated conditions. The zygote formed is collected and introduced into the uterine region of a host or surrogate mother at an appropriate time (secretory phase). Early embryos (upto 8 cell) are generally transferred to the fallopian tube whereas embryos with more than 8 cells are transferred to the uterns.
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RELATED QUESTIONS
A large number of married couples the world over are childless. It is shocking to know that in India the female partner is often blamed for the couple being childless.
- Why in your opinion the female partner is often blamed for such situations in India? Mention any two values that you as a biology student can promote to check this social evil.
- State any two reasons responsible for the cause of infertility.
- Suggest a technique that can help the couple to have a child where the problem is with male partner.
After a brief medical examination a healthy couple came to know that both of them are unable to produce functional gametes and should look for an ‘ART’ (Assisted Reproductive Technique). Name the ‘ART’ and the procedure involved that you can suggest to them to help them bear a child.
Write a brief note on the causes of infertility.
Multiple choice question.
Test tube baby technique is called _______.
Fill in the blank:
The primary sex organ in human male is _______.
Fill in the blank:
Sperm fertilizes ovum in the _______of fallopian tube.
Expand the following.
ZIFT
The procedure of GIFT involves the transfer of female gametes into the fallopian tube, can gametes be transferred to the uterus to achieve the same result? Explain.
Which Artificial Reproductive Technique can help a lady conceive a child if both her fallopian tubes are blocked?
In ______ the egg is first fertilized outside the body and then it is inserted into the oviduct.
Test-tube baby is one who ______.
A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is ______.
ZIFT stands for ______
In ZIFT method, there is ______.
Males in whom testes fail to descend to the scrotum are generally infertile. Why?
In which of the following techniques, the embryos are transferred to exist those females who cannot conceive?
Placed below are case studies of some couples who were not able to have kids. These couples are not ready for adoption or taking gametes from donors. After thoroughly examining the cases, which Assisted Reproductive Technology will you suggest to these couples as a medical expert? Explain briefly with justification of each case.
| Couple | Test reports of Female partner |
Test reports of male partner |
| Couple 1 | Normal reports | Normal sperms in testes, Missing connection in epididymis and Vas deferens. |
| Couple 2 | Blockage in the fallopian tube | Normal reports |
| Couple 3 | Normal reports | Poor semen parameters in terms of count, motility and morphology. |
| Couple 4 | low ovarian reserve | Normal reports |
| Couple 5 | Sterilization in male | Morphologically abnormal sperms |
The ______ is also called the womb.
Which one of the following choices reflects the correct number of chromosomes in the zygote and in the second polar body of Drosophila melanogaster?
| Zygote | Meiocytes | |
| I | 08 | 08 |
| II | 04 | 08 |
| III | 08 | 04 |
| IV | 04 | 04 |
