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Question
Suggest some methods to assist infertile couples to have children.
Solution
ART (Assisted Reproductive Technologies) is a term that describes several different methods used to help infertile couples. ART involves removing eggs from a woman’s body, mixing them with sperm in the laboratory and putting the embryos bath into a woman’s body.
Success rates vary depending on many factors. Some factors that affect the success rate of ART include the age of the partners, the reason for infertility, the type of ART, and whether the egg is fresh or frozen. Various methods are now available to help such couples: in vitro fertilization, gamete intra-fallopian transfer, intra cytoplasmic sperm injection, and artificial insemination.
- Test tube babies
The union of ovum and sperm occurs outside the woman's body, resulting in a zygote that divides into an embryo. The embryo is deposited in the uterus and eventually grows into a foetus. - Gamete Intra Fallopian Transfer (GIFT)
A procedure in which eggs are retrieved from a woman, mixed with sperm and immediately replaced in one or other of the woman’s fallopian tubes so that they fertilize inside the body (invivo). - Intra Cytoplasmic Sperm Injection (ICSI)
In this method, sperm and eggs are retrieved from both the parents. A single sperm is injected directly into an egg, then the fertilized egg is implanted into the woman’s uterus. - Artificial insemination technique (AIT)
In this technique, the semen is collected either from the husband or a healthy donor and is artificially introduced either into the vagina or into the uterus of the female (IUI-Intra uterine insemination). - Zygote intra fallopian transfer (ZIFT)
ZIFT later transfers the zygote or early embryo to a woman's fallopian tube.
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RELATED QUESTIONS
Correct the following statement:
In E. T. techniques, embryos are always transferred into the uterus.
Explain one application of the following:
ZIFT
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Gonorrhoea is caused by _______ bacteria.
Short answer question.
Write a note on IVF.
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Transfering of an embryo with more than 8 blastomeres into the uterus is called GIFT.
Expand the following.
ZIFT
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Test-tube baby is one who ______.
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Mark the odd one.
Trace the events from copulation to zygote formation in a human female.
In which of the following techniques, the embryos are transferred to exist those females who cannot conceive?
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.
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 |