Explain the concept of pre-implantation genetic diagnosis (PGD) and its role in surrogacy.

Pre-implantation Genetic Diagnosis (PGD) is a reproductive technology used to screen embryos for genetic abnormalities or specific genetic conditions before they are implanted in the uterus during in vitro fertilization (IVF) treatments. PGD plays a significant role in surrogacy by allowing intended parents and surrogates to make informed decisions about the embryos that will be transferred, ensuring a higher chance of a healthy pregnancy and reducing the risk of passing on genetic disorders. Here is an in-depth explanation of the concept of PGD and its role in surrogacy: 1. Process of Pre-implantation Genetic Diagnosis (PGD): * Ovarian Stimulation and Egg Retrieval: The intended mother or an egg donor undergoes ovarian stimulation to produce multiple eggs. The eggs are then retrieved through a minor surgical procedure. * In Vitro Fertilization (IVF): The retrieved eggs are fertilized with sperm from the intended father or a sperm donor in a laboratory, creating embryos. * Embryo Culture: The embryos are cultured in a laboratory for a few days until they reach a suitable stage for genetic testing. * Embryo Biopsy: A small number of cells are removed fr....