Our Meiosis Day

Prophase II:Cell event- Nucleus disappears but the Centrosomes appear DNA event- DNA condenses into chromosomes Metaphase II:Cell event- Mitotic spindle grows and then the microtubules connect to the kinetochores DNA events- Duplicated chromosomes line up on metaphase plateAnaphase II: Cell event- Microtubules lengthen (example: * <---- -----> * )DNA event- Sister Chromosomes are pulled apartTelophase II:Cell event - Nucleus reappear; centrosomes disappearDNA event - Chromosomes unwind; 4 Haploid cells are formed

Inside the Cell

10th of December 2015

OUR MEIOSIS DAY

Interphase:Cell event-Growth (G1 and G2 phase)DNA event- The DNA duplicates (s phase)Prophase I:Cell event- Nucleus disappears but the Centrosomes appear DNA event- DNA condenses into chromosomes (homologs pairs (the same set of paternal and maternal of that pair) find one another bind at chiasmata forming Tetrads crossing over "oceans" at chiasmata exchange. The process of homologs pairs coming together is synapsis.)Metaphase I:Cell event- Mitotic spindle grows and then the microtubules connect to the kinetochores DNA events- Tetrads line up on metaphase plate (asymmetrical causes Independent assortment) - Tetrads line up independently and causes and increase of genetic variation.Anaphase I: Cell event- Microtubules lengthen (example: * <---- -----> * )DNA event- Tetrads pull apartTelophase I:Cell event - Nucleus reappear; centrosomes disappearDNA event - Chromosomes unwind - The cell is haploid with duplicated chromosomes helix

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