Implantation is the process of the embryo attaching to the uterine lining of the mother in order to form a successful pregnancy. During implantation, the embryo must attach to the uterine lining in order to receive the necessary nutrients and oxygen needed to sustain a pregnancy. Implantation usually occurs 6-10 days after fertilization, and is successful if the embryo is able to attach to the uterine wall and begin to grow and develop. Male Reproductive System (PGD) is a procedure that can be used to detect genetic abnormalities in embryos before they are implanted in the uterus. PGD involves removing a single cell from the embryo and testing it for genetic abnormalities. If the embryo has a genetic abnormality, it is not implanted in the uterus and the process is stopped. PGD can be used to detect single gene defects, chromosomal abnormalities, and other genetic conditions in embryos. PGD is a valuable tool for couples who want to reduce the risk of having a child with a genetic disorder. It can also help to identify embryos that are most likely to result in a successful pregnancy.