table comparing mitosis and mitosis

TABLE COMPARING MITOSIS AND MEIOSIS

MITOSIS MEIOSISNumber of divisions One Two

Number of cells produced 2 4 (tetrad)

Chromosome sets (=n) 1n ! 1n; 2n ! 2n 2n ! 1n

Purpose Vegetative growth Sexual reproduction;produce spores to startgametophyte generation,or produce sex cells(gametes) directly (mostanimals)

Site In plants, apical and rootmeristems and vascularcambium

In plant, microsporangiaand megasporangia

Cell Division PhaseProphase I Chromosomes duplicate

(chromatids);chromosomes do not pair

Chromosomes duplicate(chromatids); likechromosomes pair

Metaphase I Chromosomes (pairedchromatids) line up atequatorial plate

Paired Chromosomes (4chromatids) line up atequatorial plate

Anaphase I Chromatids separate Chromosomes pairsseparate; chromatids staytogether

Telophase I 2 identical cells formedVoil youre done!

2 nucleii or cells formed;each with one set ofchromosomes as pairedchromatids

Prophase II Chromosomes, as pairedchromatids condensed,distinct

Metaphase II Paired chromatids atequatorial plate

Anaphase II Separation of chromatids

Telophase II Formation of 4 nucleii orcells; each haploid (1n)