Final answer:
Taking five eggs from the ovary instead of just one is helpful for increasing the chances of fertilization, having multiple embryos for testing, and minimizing the risk of cystic fibrosis.
Step-by-step explanation:
It is helpful to take five eggs from the ovary instead of just one in order to increase the chances of fertilization. By retrieving multiple eggs, there is a higher probability that at least one egg will be successfully fertilized by a sperm, increasing the chances of achieving a pregnancy.
Taking multiple eggs also allows for the possibility of having multiple embryos for testing. This is especially useful in cases where there is a known risk of genetic disorders or if the couple wants to undergo preimplantation genetic testing to select embryos without specific genetic conditions.
Additionally, taking multiple eggs can help minimize the risk of cystic fibrosis. Cystic fibrosis is a genetic disorder that can be passed on to the offspring if both parents are carriers. By having multiple eggs available, the chances of selecting an egg without the faulty CFTR gene, which causes cystic fibrosis, are increased.