Question

which event occurs following in vitro fertilization?
a. a single sperm is injected directly into a fertilized egg.
b. a fertilized egg is directly placed in the ovary.
c. a fertilized egg is placed directly into the uterus.
d. a single sperm is injected directly into the fallopian tube.

Explanation:

In in - vitro fertilization (IVF), after fertilization occurs outside the body in a laboratory, the fertilized egg (embryo) is transferred directly into the uterus for implantation and further development. Option A is incorrect as sperm is injected into an unfertilized egg in intracytoplasmic sperm injection (ICSI), not a fertilized egg. Option B is wrong because the embryo is not placed in the ovary. Option D is not part of the IVF process as sperm is not injected into the fallopian tube in this context.

Answer:

C. A fertilized egg is placed directly into the uterus.