Which term describes the indentation of the membrane between the two daughter nuclei during cytokinesis?

Which term describes the indentation of the membrane between the two daughter nuclei during cytokinesis?

• A. Cleavage Furrow
• B. Metaphase Plate
• C. Nucleolus
• D. Centrosome

Answer: (A)

During cytokinesis, animal cells split the cytoplasm by forming a contractile ring of actin filaments just under the plasma membrane. As this ring tightens, it creates a shallow groove that deepens to pinch the membrane inward between the two separating nuclei. This inward indentation is the cleavage furrow, the structure that ultimately divisions the cell into two daughter cells. The other terms refer to structures or events not involved in this membrane constriction: the metaphase plate is where chromosomes align during metaphase, the nucleolus is involved in ribosome production inside the nucleus, and the centrosome organizes microtubules.

During cytokinesis, animal cells split the cytoplasm by forming a contractile ring of actin filaments just under the plasma membrane. As this ring tightens, it creates a shallow groove that deepens to pinch the membrane inward between the two separating nuclei. This inward indentation is the cleavage furrow, the structure that ultimately divisions the cell into two daughter cells. The other terms refer to structures or events not involved in this membrane constriction: the metaphase plate is where chromosomes align during metaphase, the nucleolus is involved in ribosome production inside the nucleus, and the centrosome organizes microtubules.