If you are considering donor egg IVF, one of the most personal questions you may have is: “If I use a donor egg, will my baby have my DNA?”
The short answer is that the baby will inherit their nuclear DNA from the egg donor and the sperm provider, rather than from the person who carries the pregnancy when a donor egg is used. This means the intended mother who provides the pregnancy does not contribute nuclear DNA through the donor egg.
That does not mean the pregnancy or your relationship with your baby is any less significant. Pregnancy involves the physical environment in which the baby develops, and the person who carries the pregnancy plays an important biological role in supporting fetal development.
If you are exploring donor egg IVF in Australia, understanding the genetic, medical and emotional aspects of treatment can help you make a more informed decision.
What Happens to DNA When You Use a Donor Egg?
An egg contains genetic material from the egg donor. During IVF, the donor egg is fertilised with sperm to create an embryo.
The embryo's nuclear DNA comes from:
- The egg donor
- The sperm provider
The person carrying the pregnancy provides the uterus and the environment in which the embryo develops.
So, if you use a donor egg, the baby's genetic relationship is with the egg donor and sperm provider. The intended mother who carries the pregnancy does not provide the egg's nuclear DNA.
Will a Donor Egg Baby Look Like Me?
This is one of the most common concerns for people considering egg donation in Australia.
A baby's physical characteristics are influenced by the genes inherited from the egg donor and sperm provider. Depending on the donor selection process, intended parents may be able to consider non-identifying information about the donor, such as physical characteristics, medical history, education and other background information. Central Egg Bank states that the information available to recipients can include characteristics such as eye and hair colour, height, skin complexion and medical history, subject to applicable regulations.
A child conceived with donor eggs may therefore resemble the egg donor, the sperm provider, or a combination of characteristics from both genetic contributors.
Appearance is also more complicated than simply matching a donor's visible features. Many genes contribute to characteristics such as height, facial features, hair and eye colour.
Does the Mother Carrying the Baby Contribute DNA?
When a donor egg is used, the woman carrying the pregnancy does not contribute nuclear DNA through the egg.
There is an important distinction between genetics and pregnancy.
The person carrying the pregnancy provides the uterine environment and supports the baby's development throughout pregnancy. Factors such as the maternal environment can influence fetal development, even though the nuclear DNA came from the donor egg and sperm.
This is one reason donor egg IVF is often described as involving both a genetic contribution and a gestational contribution.
Can a Donor Egg Baby Have My Genetic Traits?
If you are the intended mother and use a donor egg, your baby's inherited nuclear DNA will not come from your own egg.
That means traits controlled by your nuclear DNA cannot be passed through your own egg because your egg is not being used.
If your partner provides the sperm, your baby may inherit genetic characteristics from your partner.
For some families, this can be an emotional part of deciding whether donor egg IVF is right for them. Discussing the genetic and emotional aspects of treatment with your fertility specialist or genetic counsellor can be helpful.
What About Mitochondrial DNA?
There is another type of genetic material worth understanding: mitochondrial DNA.
Unlike most DNA in a person's cells, mitochondrial DNA is inherited through the egg. Therefore, when a donor egg is used, the baby's mitochondrial DNA comes from the egg donor.
This is another reason the egg donor is a genetic contributor to the child.
If you have questions about your individual genetic circumstances, your fertility specialist or genetic counsellor can explain them in the context of your treatment.
How Is an Egg Donor Selected?
Choosing an egg donor in Australia is an important decision. Donor programs generally involve medical, infectious disease, genetic and psychological screening.
At Central Egg Bank, donor screening includes health and infectious disease testing, genetic screening and psychological assessment. The organisation states that most donors undergo screening covering hundreds of genes, while some donors have completed core carrier screening for conditions including cystic fibrosis, fragile X syndrome and spinal muscular atrophy.
Donor selection can also involve reviewing available non-identifying information about the donor.
The exact information available and the rules surrounding donor conception can vary depending on Australian state or territory legislation.
Is the Egg Donor the Legal Parent?
The genetic contribution of an egg donor is different from legal parenthood.
Central Egg Bank states that the egg donor is not considered the legal parent of the child and does not have parental or financial responsibility for the child.
Because donor conception laws can vary across Australia, intended parents should discuss the legal and counselling requirements applicable to their state with their fertility clinic.
What Genetic Screening Is Done With Donor Eggs?
Genetic screening is an important part of donor egg programs.
Depending on the donor and program, screening can include testing for inherited conditions and carrier status. Central Egg Bank states that its donor screening process includes genetic assessment and that donor-recipient genetic suitability can be considered to help reduce the risk of certain inherited conditions.
Genetic screening cannot eliminate every possible genetic or developmental risk. Your fertility specialist or genetic counsellor can explain what testing has been performed and what the results mean for your particular circumstances.
Can I Find Out About the Egg Donor?
The information available depends on the donor program and Australian legislation.
Central Egg Bank states that its donors are ID Release, meaning donor-conceived offspring can apply for identifying information when they reach the applicable age under state legislation.
Recipients can also receive certain non-identifying information about donors, subject to applicable rules and regulations.
This is an important consideration when choosing an egg bank in Australia and discussing donor conception with your fertility clinic.
Choosing Donor Egg IVF in Australia
For people considering donor egg IVF, choosing an established donor egg provider and working with an experienced fertility clinic are important parts of the process.
Central Egg Bank provides frozen donor eggs to partner fertility clinics in Australia. Its program involves recruiting and screening donors, vitrifying eggs and transporting them to partner clinics for treatment.
CentraLIVF and Central Egg Bank also provide information about donor screening, donor matching, treatment programs and the donor egg journey.
If you are considering donor egg IVF in Australia, your fertility specialist can help you understand:
- Whether donor egg treatment is appropriate for you
- Your available donor options
- Genetic screening
- Donor information and eligibility
- Treatment requirements
- Embryo creation and transfer
- Legal and counselling requirements
- The rules that apply in your state or territory
Frequently Asked Questions
Will a donor egg baby have my DNA?
If you are the intended mother using a donor egg, the baby's nuclear DNA will come from the egg donor and sperm provider. The pregnancy is still carried by you if you are the gestational parent, but your own egg's nuclear DNA is not part of the embryo.
Will my donor egg baby look like me?
A donor egg baby's inherited physical traits come primarily from the egg donor and sperm provider. A child may share some characteristics with the intended family, but there is no guarantee that the baby will physically resemble the intended mother.
Does a donor egg have the donor's DNA?
Yes. The egg contains the donor's genetic material, including nuclear DNA and mitochondrial DNA.
Can I choose an egg donor based on appearance?
Donor programs may provide non-identifying information about physical characteristics, depending on the program and applicable regulations. Central Egg Bank states that recipients can receive information such as height, eye and hair colour and skin complexion, subject to relevant regulations.
Is the egg donor the baby's legal mother?
The genetic contribution of the egg donor does not necessarily make the donor the legal parent. Central Egg Bank states that its egg donors are not considered the legal parent of donor-conceived children.
Where can I find donor eggs in Australia?
People considering donor egg treatment can work with fertility clinics and donor egg providers such as Central Egg Bank, which supplies frozen donor eggs to partner clinics in Australia.
Considering Donor Egg IVF?
Understanding the genetic relationship is only one part of deciding whether donor egg IVF is right for you. Your fertility specialist and genetic counsellor can help you understand donor screening, genetic considerations, treatment options and the requirements that apply in your state.
Central Egg Bank provides donor egg programs for Australians through partner fertility clinics and offers information about donor selection, screening and treatment pathways.
