M Phase (division) Interphase G1 Phase G2 Phase S Phase Growth DNA & Chromosome Replication Cells Spend Most of the Time in Interphase

Mitosis  Produces New Body (Somatic) Cells  Growth of Multi-cellular Organisms  Form of Asexual Reproduction (Genetic Information is not shared)  Results in Identical Daughter Cells

Prophase Replicated chromosome Nucleus dissolves Centrioles migrate

Metaphase Chromosomes line up on “equator” Centrioles at “poles” Spindle fibers form

Anaphase Replicated chromosomes separate Centrioles at “poles” Spindle fibers “pull”

Telophase Chromosomes gather together Nucleus re-forms Cytokenesis begins

Interphase Two identical daughter cells same number of chromsomes as parent cell (diploid) begin to carry out normal cell functions chromosomes begin to replicate

Meiosis  Produces Gametes  Results in Sperm, Egg, or Pollen  Necessary for Sexual Reproduction (Genetic Information is shared)  Results in Daughter Cells with Half the Amount of Genetic Information

Prophase I Replicated chromosome Nucleus dissolves Centrioles migrate

Metaphase I Pairs of chromosomes (homologs) line upon “equator” Centrioles at “poles” Spindle fibers form

Anaphase I Pairs of chromosomes (homologs) separate from each other Centrioles at “poles” Spindle fibers pull homologs apart

Telophase I Chromosomes gather together Nucleus re-forms Cytokenesis begins

Interphase I Two new cells after 1st division half number (haploid) of chromosomes in each daughter cell a second cell division begins

After 2nd division Four total daugther cells each daughter cell with haploid number of chromosomes these cells are called gametes (sex cells) in animals: male - sperm, female- ova (egg) in plants: male - pollen, female - egg

MitosisMeiosis Produces somatic (body) cells diploid number of chromosomes in daughter cells one cell division resulting in two daughter cells replicated chromosomes individually line up during metaphase genetic information in daughter cells identical to that of parent cell Produces gametes (sex) cells haploid number of chromosomes in daughter cells two cell divisions resulting in four daughter cells replicated chromosomes line up in pairs (homologs) during metaphase genetic information in daughter cells different to that of parent cell