Zoology - Structural Organisation in Animals Question with Solution | TestHub

First and second cleavage in frog are holoblastic, complete, equal, vertical, whereas third cleavage is holoblastic, complete, unequal, latitudinal or horizontal and near the animal pole. It results in the formation 8 cells of which three are black micromeres which have less or no yolk, so divide faster and 4 are colourless macromeres.