The yolk plug is a structure in gastrula which is formed by the protrusion of
Endodermal cells
Endo-mesodermal cells
Ectodermal cells
Mesodermal cells
Meridional cleavage results in blastomeres numbering
In embryonic stage RBC develops in
Male accessory glands include
Telolecithal eggs have
In humans, at the end of the first meiotic division, the male germ cells differentiate into the