Given a scientific question, generate a correct answer to it.

[Q]: What also receives input from other areas of the forebrain through the medial forebrain bundle?
[A]: hypothalamus

[Q]: On the ventral side of the embryonic disc, opposite the amnion, cells in the lower layer of the embryonic disk (the hypoblast) extend into the blastocyst cavity and form this?
[A]: yolk sac

[Q]: What type of reproduction begins when an egg and sperm combine?
[A]:
sexual reproduction