Germinal disc

  (Redirected from Blastodisc)

Germinal disc may refer to:

In birdsEdit

The germinal disc, also called the blastodisc, is a small, circular, white spot (approximately 1.5-3 mm across) on the surface of the yellow yolk of a bird's egg.

In mammalsEdit

The blastodisc refers to a round single-cell layer of cells inside the blastula from which the embryo is going to form.