Meiosis: The Process. Biology 12. Cartoon of the day:. Context: . Meiosis allows for the formation of sperm and egg cells. Overview:. Interphase Meiosis I Prophase I Metaphase I Anaphase I Telophase I (and cytokinesis) Meiosis II Prophase II Metaphase II Anaphase II
Meiosis: The Process
for the formation
of sperm and
Tetrads line up at the equator
Alignment is random so that chromosomes from one will be mixed with the other parent when they move apart
One homologous chromosome of each pair is pulled to each end of the cell.
**Remember in mitosis, it was the chromatids that separated, not pairs of chromosomes!
The cell begins to divide into two daughter cells.
Each cell produced after cytokinesis has been reduce from diploid to haploid.
DNA is not replicated before meiosis II
Nuclear membrane begins to dissolve
Spindle fibers begin to form
Spindle fibres attach to centromeres
Sister chromatids line up at equator
Centromeres divide in two
Spindle fibres pull sister chromatids towards opposite ends of cell (pole)
Nuclear membrane reforms and cytoplasm divides