If the nuclei from an $8$-celled stage of an embryo are transplanted into enucleated eggs, which of the following events is likely to occur
Formation of viable embryo in the recipient eggs
Donor nuclei die in the new environment
Cleavage occurs but is arrested after some time
Recipient egg dies
In the embryonic development of chordate the animal pole forms one of the following of the adult
During embryonic development, the establishment of polarity along anterior/ posterior, dorsal/ventral or medial/lateral axis is called
Bartholin glands are situated
Pituitary gland is derived from
Given below is a diagrammatic sketch of a portion of human male reproductive system. Which of the following part contributes to the maximum portion of semen?