holoblastic

Examples of holoblastic in the following topics:

• Cleavage of the Zygote

  • Depending mostly on the amount of yolk in the egg, the cleavage can be holoblastic (total) or meroblastic (partial).
  • Holoblastic cleavage occurs in animals with little yolk in their eggs.
  • In holoblastic eggs, the first cleavage always occurs along the vegetal-animal axis of the egg, and the second cleavage is perpendicular to the first.

• Cleavage, the Blastula Stage, and Gastrulation

  • Cleavage can take place in two ways: holoblastic (total) cleavage or meroblastic (partial) cleavage.
  • In placental mammals (including humans) where nourishment is provided by the mother's body, the eggs have a very small amount of yolk and undergo holoblastic cleavage.