Cell Reproduction
Definitions
Somatic Cells - body cells
Produced through mitosis
Has 46 chromosomes (23 pairs)
Homolog – each member of a chromosome pair
Diploid (2n) – total of 46 chromosomes in people – zygote & somatic
cells
Haploid (n) – total of 23 chromosomes in people, gametes (sperm &
egg)
The Cell Cycle
The sequence of growth and division of a cell
95% of cell cycle in interphase
5% of cell cycle in mitosis
Interphase
Has three different parts:
Growth Stage 1 (G1) – metabolic activity of a cell
Synthesis Stage (S) – metabolic activity of the cell, replication of
DNA
Growth Stage 2 (G2) – metabolic activity of the cell, prepare for
division