Maarg Manthan · Topic 10.12

Embryo Transfer Technology

Science & Technology › Biotechnology – Principles and Techniques · Topic 10.12

Embryo transfer technology is a reproductive biotechnology in which an embryo, formed in the body of a female or in a laboratory dish, is placed into the uterus of a recipient female so that the pregnancy continues there. In humans the method is the last step of in vitro fertilisation, in which an egg is fertilised outside the body and the embryo is transferred into the womb. In animal husbandry, a high quality donor cow is given hormones to release many eggs, the embryos are flushed out a week after insemination, and each is implanted in a recipient cow. Louise Brown, the first test tube baby, was born in 1978 in the United Kingdom, and in India the first test tube baby, Durga, was born in October 1978 in Kolkata through work led by Subhash Mukhopadhyay.

5 min read · UPSC Prelims · Science & Technology · Biotechnology – Principles and Techniques

At a Glance

Human use IVF embryo transfer
Animal use Dairy breed improvement
First test tube baby Louise Brown, 1978
India Durga, 1978
Law ART Act, 2021
Exam link UPSC Prelims, Science & Technology: Biotechnology – Principles and Techniques

Where Does It Fit?

This topic follows stem cell biotechnology. Both deal with early cells of life, and embryo transfer is where fertilised eggs are moved from a laboratory to a womb. Previous topic: Stem Cell Biotechnology and Engineering. Next topic: patents-trade-secrets-plant-breeders-rights/" class="maargx-auto-link" data-preview="At a Glance Patent term 20 years Indian patent law Patents Act, 1970 Plant varieties law PPVFR Act, 2001 Microbe deposit Budapest…">Protection of Biotechnological Inventions: Patents, Trade Secrets, Plant Breeders’ Rights.

What Are the Steps of Embryo Transfer?

Step	What happens
Superovulation	The donor female is given hormones such as follicle stimulating hormone so that she releases many eggs
Fertilisation	In animals, the donor is artificially inseminated. In humans, eggs are collected and fertilised in a dish
Embryo collection	In cattle the embryos are flushed non-surgically from the uterus about six to eight days after insemination
Embryo evaluation	The embryos are examined for stage and quality, and may be frozen
Synchronisation	The recipient is brought to the same stage of the heat cycle as the donor
Transfer	The chosen embryo is placed in the uterus of the recipient using a thin tube
Pregnancy check	The pregnancy is confirmed after some weeks

Where Is Embryo Transfer Used?

Infertility treatment: IVF and related methods help couples who cannot conceive naturally
Dairy improvement: one superior cow can give many calves a year, which spreads good milk genes rapidly
Preserving breeds: frozen embryos can safeguard rare or endangered breeds
Disease free herds: embryos can be moved between countries with less risk than live animals
Research: transgenic and cloned animals depend on embryo handling
Genetic diagnosis: pre-implantation testing can check for serious inherited disease before transfer
Surrogacy: an embryo is transferred to another woman who carries the pregnancy, subject to law
Wildlife conservation: embryos of rare species may be placed in a related species

What Else Should You Remember?

In vitro fertilisation: fertilisation outside the body. Robert Edwards received the 2010 Nobel Prize in Physiology or Medicine for developing it
Intracytoplasmic sperm injection: a single sperm is injected into an egg, used for male infertility
Gamete intrafallopian transfer and zygote transfer: related methods in which eggs and sperm or early embryos are placed in the fallopian tube
Embryo freezing: called cryopreservation, using very low temperature in liquid nitrogen
Law in India: the Assisted Reproductive Technology (Regulation) Act, 2021 and the Surrogacy (Regulation) Act, 2021 regulate clinics, donors and surrogacy. A National Assisted Reproductive Technology and Surrogacy Board oversees them
Surrogacy rules: Indian law allows only altruistic surrogacy for eligible Indian couples and bans commercial surrogacy
National Livestock Mission: the Government supports embryo transfer for breed improvement. The Rashtriya Gokul Mission supports IVF and embryo transfer centres for indigenous cattle breeds
Sex selection: selecting the sex of an embryo for non-medical reasons is prohibited under the Pre-Conception and Pre-Natal Diagnostic Techniques Act, 1994
Success rates: success depends on age, embryo quality and clinic skill, and is often below half per cycle
Risks: multiple pregnancies, ovarian over stimulation and emotional strain
Preimplantation genetic testing: a few cells are tested from an early embryo to avoid serious inherited disease
Three person technique: mitochondrial replacement is a related technique, as in Designer Babies/Three-Parent Babies
Embryo splitting: twin embryos can be split in cattle to get identical calves, a related method of animal breeding
Stage of embryo: cattle embryos are usually transferred at the morula or blastocyst stage, while human embryos are often transferred at day three or day five

Why Does It Matter for the Exam?

Process: superovulation, flushing and recipient
Milestones: 1978 test tube babies in the United Kingdom and India
Law: ART Act and Surrogacy Act, 2021
Current affairs link: IVF cattle programmes and surrogacy rules
Common errors: confusing artificial insemination with embryo transfer

As an analytical point, embryo transfer lets India raise milk output of indigenous breeds without importing animals, and gives hope to many couples. Strong regulation protects donors, surrogates and children.

Why Is This Topic Important?

Process Steps in order
Livestock Breed improvement
Law ART and surrogacy rules

What Came Next?

The next topic covers the protection of biotechnological inventions through patents and breeders rights. Next topic: Protection of Biotechnological Inventions: Patents, Trade Secrets, Plant Breeders’ Rights.

Key People and Terms

Superovulation Release of many eggs
Donor Female giving embryos
Recipient Female carrying embryo
IVF Fertilisation in a dish
Cryopreservation Freezing for storage
Surrogacy Carrying for another

Exam Corner

Points to Remember

First test tube baby: 1978, Louise Brown.
Edwards Nobel: 2010.
ART Act and Surrogacy Act: 2021.
Commercial surrogacy is banned in India.
Cattle embryos flushed after about a week.

Do Not Confuse With

Artificial insemination and embryo transfer Semen placed in the female versus embryo placed in the female
IVF and embryo transfer Fertilisation outside versus placing the embryo
Altruistic and commercial surrogacy Allowed versus banned

Memory Hook

Hormones for many eggs, flush the embryos, match the recipient, then place.

Mains Angle

Questions ask about the process, livestock use and law. These points help.

Benefits Fertility and livestock
Ethics Surrogacy and sex selection
Rules ART Act

A Question You May Face

An original practice question, not a past paper question.

“Explain embryo transfer technology and discuss its use in livestock improvement and in human reproduction along with the legal framework in India.”

How to Answer

Process Donor to recipient.
Uses Cattle, couples.
Issues Ethics, exploitation.
Way Law and enforcement.

GS Relevance

Prelims: IVF, embryo transfer steps, livestock use, Indian law. GS Paper 3: science and technology, biotechnology, animal husbandry; GS Paper 2: health and law.

Frequently Asked Questions

What is embryo transfer technology?

Embryo transfer technology is a method in which an embryo, formed inside a donor female or in a laboratory dish, is placed into the uterus of a recipient female to continue development. In humans it is the final step of in vitro fertilisation, and in cattle it spreads good genes quickly.

How is embryo transfer done in cattle?

A donor cow is given hormones to release many eggs and is inseminated. About a week later the embryos are flushed out of her uterus without surgery, checked for quality, and each embryo is placed in a recipient cow whose heat cycle has been matched to that of the donor.

Who was the first test tube baby?

Louise Brown, born in the United Kingdom in July 1978, was the first test tube baby. In India, Durga, also called Kanupriya, was born in Kolkata in October 1978 through the work of Subhash Mukhopadhyay. Robert Edwards, who developed in vitro fertilisation, received the 2010 Nobel Prize.

What laws regulate assisted reproduction in India?

The Assisted Reproductive Technology (Regulation) Act, 2021 regulates fertility clinics, donors and embryo handling, and the Surrogacy (Regulation) Act, 2021 allows only altruistic surrogacy and bans the commercial form. A National Board oversees both laws, and sex selection is banned under the Pre-Conception and Pre-Natal Diagnostic Techniques Act.

Why is embryo transfer useful in dairy farming?

Embryo transfer allows one high yielding cow to produce many calves in a year instead of one, so superior milk traits spread quickly through a herd. It also lets farmers protect rare breeds as frozen embryos, and move genes between regions without transporting live animals.

PYQ Practice — Statement Analysis

1 Commercial surrogacy is permitted under Indian law.

False

Only altruistic surrogacy is allowed.

2 In cattle, a donor is given hormones to release many eggs.

True

Called superovulation.

3 Robert Edwards was awarded a Nobel Prize for developing in vitro fertilisation.