Question

What does 'holoblastic' cleavage mean?

Options

• Entire egg divides completely

• Only part of egg divides

• Each blastomere has fixed developmental fate

• Blastomeres arranged in radial symmetry

Answer 1

Holoblastic cleavage refers to a complete division of the entire egg into smaller cells. This contrasts with meroblastic cleavage, where only a portion of the egg undergoes division. Human cleavage is holoblastic.