GENETIC VS GESTATIONAL SURROGATE. “A genetic surrogate essentially donates her own egg and is inseminated with the sperm of the commissioning man. A gestational surrogate has an embryo inserted into her uterus following IVF. The embryo is produced with the egg and sperm of the commissioning couple, or in some cases, donated gametes.”
http://www.parl.gc.ca/Content/LOP/ResearchPublications/prb0035-e.htm