Recent findings suggest that women using donor eggs still pass some traits of their DNA to the donor-egg baby. This phenomenon is called "epigenetics" and is defined as the study of enduring changes in gene activity while the fetus is in the womb.
Epigenetic alterations may influence and/or modify the activity levels of some genes. To sum up, there exists an epigenetic mechanism through which the mother's genetic material appears to influence the embryo's genes.
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