Question

Which type of cleavage is characteristic of human development?

Options

• Spiral and indeterminate

• Meroblastic and determinate

• Holoblastic and indeterminate

• Radial and determinate

Answer 1

Human cleavage is holoblastic, meaning the entire egg divides completely. It is also indeterminate, meaning each blastomere has the potential to form a complete embryo. This property explains why identical twins can arise from early embryonic stages when blastomeres are separated.