Her egg is artificially inseminated by the intended father's or a sperm donor's sperm, resulting in an embryo that she subsequently bears to term in her own uterus. In conventional surrogacy, the surrogate is the child's biological mother, and the surrogate mother shares DNA with the newborn. However there are cases where this relationship is not clear cut, such as when one partner is adopted. The intended parents pay the surrogate mother for the service of being a carrier. In addition, they may also offer them money for their medical expenses and compensation for any loss of income during the time they are carrying the baby. This arrangement is known as "traditional" or "conventional" surrogacy. In "alternative" or "prospective" surrogacy, the surrogate mother agrees to carry another woman's embryo or oocyte (an ovum from which an embryo has developed) until it becomes pregnant. The alternative mother then gives birth to the child together with the primary mother. Although she does not receive any payment, she enjoys many other benefits such as social recognition and involvement in maternal health care. She may even be given financial assistance to cover the cost of having a baby. This type of arrangement is used when there is a lack of eligible donors within the family network of the intended parents.