Meiosis

Prophase 1

Still non-sister chromatids

Overlap then swap- GENETIC VARIATION

Metaphase 1

Chromosomes move to the equator, spindles form from centrioles

Anaphase 1

Chromosomes pulled to the poles, by spindles and centrioles

GENETIC VARIATION

Telophase 1

Nuclear envelop forms.

Diploid due to replication.

Prophase 2

Centriroles replicate and move to poles. No longer genetically identical.

Metaphase 2

Chromosomes line up along the equator. Spindles form at right angles.

Anaphase 2

Chromatid moving towards the poles.

Genetic Variation

Telophase 2

Nuclear envelope forms, leaving 4 genetically different haploid cells.

GENETIC VARIATION

-Crossing over during Prophase 1

-Haploid cells carry both genes but only half the chromosomes, pulled apart in anaphase creating more variation