In a traditional surrogacy, the surrogate and the child do share DNA, because the surrogate's own egg is used in creating the pregnancy.
How much DNA does a surrogate baby have?
So, under gestational surrogacy, there is no genetic or DNA relationship between the baby and the surrogate mother, and no chance that the baby will resemble the surrogate mother. The baby will only share DNA with the person who has provided the sperm, and the person who has provided the egg.Feb 11, 2020