The diagram illustrates the various processes involved in the cloning of a sheep.
Overall, there is a fusion of two cells taken from a sheep’s udder and an adult female sheep. The fused cell develops into an embryo, which is carried by a foster mother of the uterus. As the embryo further develops, a normal lamb is formed using the technique of cloning.
Initially, two cells are taken from two sheep. One is from a donor sheep’s udder, called the donor cell, and the other is from a fully grown female sheep, called the egg cell. Now, the nucleus of the egg cell is removed and replaced with the donor’s nucleus. The replacement of the nucleus is done by fusing the cells with an electric shock.
The fused cell begins to multiply normally to form an embryo. The embryo formed is placed inside the uterus of a foster mother. The development of the embryo takes place, as normal, to form a lamb. Thus, through these different processes, a cloned lamb is born without mating.