The Process Of Meiosis

Front 1

What are the phases of meiosis?

Back 1

Prophase I, Metaphase I, Anaphase I, Telophase I, (Interphase,) Prophase II, Metaphase II, Anaphase II, Telophase II.

Front 2

Describe the process of Prophase I.

Back 2

-Chromosome becomes visible as two sister chromatids
-Homologous chromosomes pair up
-Nucleolus and nuclear envelope disintegrates
-Chromosome appear double-stranded
-Chiasmata become visible; chromosomes still attracted to each other
-Centriole begin to move away; spindle forms

Front 3

Describe the process of Metaphase I.

Back 3

-The bivalents go to the spindle.
-Arrangements are random of other bivalents.
-Centromeres become attached to spindle fibres.

Front 4

Describe the process of Anaphase I.

Back 4

-Homologous chromosomes separate; pulled to two poles
-Could be due to shortening of specific spindle fibres

Front 5

Describe the process of Telophase I.

Back 5

-Chromosomes reach opposite poles of spindle.
-Spindle fibres disintegrate.
-Nuclear envelope & nucleoli reform
-May enter interphase but NO DNA replication occurs.