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Question
An infertile couple is advised to adopt test-tube baby programme. Describe two principle procedures adopted for such technologies.
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Solution
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.
RELATED QUESTIONS
Expand the following:
ZIFT
Explain one application of the following:
ZIFT
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The primary sex organ in human male is _______.
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The disc-like structure which helps in the transfer of substances to and from the fetus’s body is called _______.
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Gonorrhoea is caused by _______ bacteria.
Explain any three methods that can be used to overcome infertility.
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.
A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is ______.
Artificial insemination means ______.
The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females ______.
The stage transferred into the lotuses after induced fertilization of ova in the laboratory is ______.
In ZIFT method, there is ______.
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.
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.
Write the long form of GIFT.
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.
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 |
