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प्रश्न
An infertile couple is advised to adopt test-tube baby programme. Describe two principle procedures adopted for such technologies.
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उत्तर
In-vitro fertilisation (IVF): In this process, the fertilisation takes place outside the body (test tube baby). The following techniques are included in IVF:
- Zygote Intrafallopian Transfer (ZIFT) - In ZIFT, the sperm from a male donor and the ovum from a female donor are fused in the laboratory. The zygote so formed is transferred into the fallopian tube at the 8 blastomeres stage.
- Gamete Intrafallopian Transfer (GIFT) - In GIFT, females who cannot produce ovum, but can provide suitable conditions for the fertilisation of ovum, are provided with ovum from a donor.
संबंधित प्रश्न
Suggest some methods to assist infertile couples to have children.
Multiple choice question.
Test tube baby technique is called _______.
Identify the IUD in the given diagram.
Expand the following.
ICSI
Generally the zygote or early embryo with how many blastomeres is transferred into the fallopian for further development, in IVF?
Which method of ART is preferred incase of blockage of fallopian tubes?
AI is the preferred technique used incase of ____________.
Which Artificial Reproductive Technique can help a lady conceive a child if both her fallopian tubes are blocked?
In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube?
Which of the following is a non-medicated intrauterine device (IUD)?
ZIFT is transfer of ______.
The stage transferred into the lotuses after induced fertilization of ova in the laboratory is ______.
Males in whom testes fail to descend to the scrotum are generally infertile. Why?
An infertile couple was advised to undergo In vitro fertilization by the doctor. Out of the options given below, select the correct stage for transfer to the fallopian tube for successful results.
Trace the events from copulation to zygote formation in a human female.
Given below are Column A with a list of certain Assisted Reproductive Technologies (ART) and in Column B the procedures followed during ART:
| Column A | Column B | ||
| S. No. | Names of ART | S. No. | Procedures |
| (A) | GIFT | (i) | Transfer of ovum from a donor into the fallopian tube of another female. |
| (B) | ICSI | (ii) | Transfer of semen from the donor into the vagina of the female. |
| (C) | ZIFT | (iii) | Injecting sperm directly into the ovum. |
| (D) | IUI | (iv) | Transfer of early embryos into the fallopian tube. |
Choose the option where ART correctly matches with the procedure.
Give a term for the following:
An ART in which eggs are removed from the ovary of the female, fertilised and then placed in her fallopian tube.
Expand the term ZIFT.
Explain any two ways by which IUDs devices act as contraceptives.
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 |
