Cell Division

Diploid – a cell with a full set of chromosomes

Haploid – a cell with half as many chromosomes

Chromatin – chromosomes wrapped around proteins called histones.

Cell Cycle

Interphase:

•G1 phase – the cell grows (new organelles and proteins are made) in preparation for mitosis

•S phase – DNA synthesis (by semi-conservative replication); ready to divide by mitosis

•G2 phase – the cells continue to grow in preparation, e.g. protein synthesis (proteins made needed for the division)

Mitosis – the process by which cells undergo nuclear division (divide into two cells) to achieve growth and repair