PGD/PGS are genetic technologies intended for embryos
According to researchers, about 50% of embryos have chromosomal defects due to which the pregnancy cannot be obtained or is aborted on the certain term. Embryos with chromosomal aberrations are identified by PGD (Pre-implantation Genetic Diagnosis) / PGS (Preimplantation Genetic Screening) and only healthy embryos can be transferred into the uterine cavity, which increases the chances of success of in-vitro fertilization.