Biology 11 : Cell Cycle

Mitosis – Nuclear Division • Cell growth • Cell repair • Specialization • Size efficiency (Contact inhibition) Interphase is G1, S and G2 (Not ready) – Cell preparation for division G1 = Growth S = Genetic Material Synthesized/Duplicate G2 = Reproduce other organelles G0 = No reproduction, in suspension 90% cell division is spent in getting ready Cytokenesis – Division of the cytoplasm (organelles)

Chromosome that has already replicated – sister chromatid (identitical)



22 Body Pairs + 1 Sex Pairs

Meiosis Homologous pairs of Chromosomes Identitical coding / trait -> Different gene expression