Cytokinesis in animal cells involves creating a contractile ring that pinches inwards, eventually splitting the cell in half. Cytokinesis begins in the anaphase (beginning of nuclear division) and continues until telopha... More »

In animals, mitosis occurs in two places. The first is in the development of the embryo, and the second is in special tissues in the organs to replace tired and old cells. More » Science Biology Cells

Cytokinesis is accomplished in animal cells by a narrowing cleavage furrow that pulls inward and eventually splits the cell, while plant cells divide through the formation of a new cell wall that grows outward from the c... More » Science Biology Cells

The division of animal cells, or mitosis, involves division of the nucleus and cytokinesis, or division of the cytoplasm. Identical copies of all 23 chromosomes are present in both the original and two daughter cells tha... More »

Animal cells do not contain cell walls because cell walls prevent specialization, and individual animal cells do not need protection from the outside environment. The evolution of cells without walls also meant they coul... More »

Dr. William H. Heidcamp, a professor in the Biology Department at Gustavus Adolphus College, explains that cell differentiation occurs when the structure and function of cells change within a certain period. The formatio... More »

Cytokinesis occurs concurrently with two types of nuclear divisions called mitosis and meiosis, which occur in animals. Mitosis and each of the two meiotic divisions result in two separate nuclei contained within a singl... More »