Normal Fertilized, or Abnormal Fertilized - What is the Line Between Them?

Abstract

The line between abnormal and normal fertilized oocyte is typically determined by the presence or absence of genetic or chromosomal abnormalities. In general, a normal fertilized oocyte refers to one that is euploid and has undergone successful fertilization resulting in a viable embryo. On the other hand, an abnormal fertilized oocyte is generally aneuploid and may have genetic abnormalities. These abnormalities can occur due to errors during fertilization or genetic mutations inherited from the parents. Preimplantation genetic testing (PGT) can help to identify abnormal embryos, allowing selection of healthy embryos for transfer. It is important to note that the line between normal and abnormal fertilized oocytes can be complex and may not always be clear-cut, as some abnormalities may have varying degrees of impact on development.