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 »

Prior to birth, hematopoiesis occurs in the yolk sac, then in the fetal liver, before taking place in the bone marrow and lymphatic system of normal adults. Hematopoiesis is the process of generating mature blood cells f... More »

Cell differentiation describes the process by which a cell is destined to become a particular type of cell, according to the Department of Biology at Kenyon College. The zygote is a cell formed from the union of sperm an... More »

Egg cells have adaptations in formation, structure and genetic makeup that enable them to function. Egg cells have similar genetic composition to sperm, but their physical structure and initial formation are unique. More »

Animal cells aren't all shaped the same way; the shape of a specific animal cell depends on its function and where it is in the body. Unlike plant cells, animal cells do not have rigid cell walls that limit them to a rec... More »

Damaged human brain cells do not regenerate because the process that creates brain cells, neurogenesis, ceases before birth for many brain structures and in all but one brain structure by age two, according to BrainFacts... More »

As a result of cell adaptation, the function of the cell influences its shape and internal structure. This is visible in specialized cells such as red blood cells, sperm cells, muscle cells and nerve cells. More »