In humans, implantation is the stage of pregnancy at which the already fertilized egg adheres to the wall of the uterus. At this stage of prenatal development, the conceptus is a blastocyst. It is by this adhesion that the fetus receives oxygen and nutrients from the mother to be able to grow.\n\nAnswer this question: where does the implantation of a fertilized egg occur?
Step-by-step reasoning:
the wall of the uterus
To answer the above question, the relevant sentence is: In humans, implantation is the stage of pregnancy at which the already fertilized egg adheres to the wall of the uterus.

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The final answer: the wall of the uterus