In in vitro fertilization (IVF), multiple embryos can be created depending on several factors. The typical goal is to produce multiple embryos to increase the chances of a successful pregnancy. Here's a concise explanation:In IVF, multiple eggs are retrieved from the woman's ovaries and fertilized with sperm in a laboratory setting. Not all eggs will successfully fertilize, and not all fertilized eggs will develop into embryos. The number of embryos created varies based on factors like the woman's age, the quality of the eggs and sperm, and the specific IVF protocol used. For instance, a woman in her 20s or early 30s may have several eggs retrieved and fertilized, leading to the creation of multiple embryos. On the other hand, an older woman or a woman with fewer viable eggs may produce fewer embryos. Additionally, some embryos may not develop normally or may be of lower quality, further impacting the number of viable embryos. During the IVF process, the embryologist will evaluate the quality of the embryos and select the best ones for transfer to the woman's uterus. Extra embryos can be cryopreserved (frozen) for potential future use. In summary, the number of embryos created in IVF can vary widely depending on the individual circumstances, but the goal is typically to produce multiple embryos to increase the chances of a successful pregnancy.