One day an angel appeared to Mary and told her she was going to have a baby. The angel knew this information. He said that Mary was going to become pregnant in a unique way. She would be pregnant by God's Spirit. She would be pregnant even though she was not and had not been involved with a man.
Parthenogenesis is the study of the growth of an organism from an unfertilized cell.
John MacArthur reports, Laboratory experiments have revealed that in some cases parthenogenetic life can be generated in some animals. Among honeybees, for example, the unfertilized eggs develop naturally into drones. Artificial parthenogenesis has been used to produce silkworms since 1888. Many forms of invertebrates and plants may be reproduced fairly easily through parthenogenesis. In recent years frogs and rabbits have been reproduced by parthenogenesis in laboratory experiments.