Respuesta :
Preimplantation genetic diagnosis (PGD) analyzes a single cell to determine if an embryo contains a mutation that results in a disorder.
Preimplantation genetic diagnosis is the genetic profiling of embryos and, in some cases, oocytes prior to fertilization. PGD is regarded in the same way as prenatal diagnosis. Pre-implantation genetic diagnosis is a laboratory procedure used in conjunction with in vitro fertilization to reduce the risk of inherited conditions being passed on.
PGD is used to detect single gene defects in diseases such as cystic fibrosis, Tay-Sachs disease, sickle cell anemia, and Huntington disease. The abnormality in such diseases can be detected using molecular techniques that use polymerase chain reaction amplification of DNA from a single cell.
PGD is considered ethically sensitive because, like selective abortion after prenatal diagnosis, it amounts to a form of selective reproduction in which only children who are not affected by the disorders their parents were at risk of transmitting are allowed to be born.
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