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What is a test tube baby?

Answer
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Hint: IVF stands for in vitro fertilization, which is a type of assisted reproductive technology used to treat infertility and gestational surrogacy. A fertilized egg can be implanted into the uterus of a surrogate, and the child born as a result is genetically unrelated to the surrogate.

Complete answer:
In vitro fertilization (IVF) is a method of fertilization that involves combining an egg with sperm outside of the body ("in glass"). The procedure entails monitoring and stimulating a person's ovulatory cycle, removing an ovum or ova (egg or eggs) from their ovaries, and allowing sperm to fertilize them in a laboratory culture medium. After 2–6 days of embryo culture, the fertilized egg (zygote) is implanted in the same or another person's uterus in the hopes of establishing a successful pregnancy.
IVF stands for in vitro fertilization, which is a type of assisted reproductive technology used to treat infertility and gestational surrogacy. A fertilized egg can be implanted into the uterus of a surrogate, and the child born as a result is genetically unrelated to the surrogate. Fertility tourism has risen as a result of some countries banning or restricting the availability of IVF treatment. IVF is limited in its availability including costs and age, for a person to carry a healthy pregnancy to term.
Thus, When a couple is unable to conceive, one of the techniques used is the test tube. Male sperm and female ovum are fused outside the female body in a test tube in a laboratory in this technique. As a result, a zygote is formed. The zygote is then fed properly so that it can develop into an embryo. The developed embryo is then implanted in the uterus of the woman. It is transferred to the fallopian tube if done at the 8-celled stage. It is transferred to the uterus if it is implanted in the 16 celled stages.

Note:
Louise Joy Brown, the world's first in vitro fertilization (IVF) baby, was born on July 25, 1978, at Oldham and District General Hospital in Manchester, England, to parents Lesley and Peter Brown. The healthy baby, who weighed five pounds and twelve ounces, was delivered by cesarean section shortly before midnight.