Mitosis

Cell Biology

In the life cycle of a dividing eukaryotic cell, the nuclear envelope must break up to allow chromosomes to split and be passed to daughter cells. This controlled disassembly is...

Science & Education

In anaphase of mitosis and anaphase I and II of meiosis, the centromere is the constricted region where sister chromatids are held together by cohesin proteins. Its primary role...

biology

Crossing over is the exchange of chromosome segments between homologous partners. It is a defining feature of meiosis and does not occur in mitosis. In meiosis, crossing over ha...

science

Cell division is a fundamental process that enables life at the smallest scales. The two primary reasons cells divide are growth and repair. Growth involves increasing the numbe...