BIOL 1090 Lecture Notes - Lecture 2: Telophase, Prophase, Spermatogonium
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3 Nov 2016
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It involved the duplication of chromosomes set in nucleus. Interphase- time between successive mitosis (g1, s, g2) The centromere is duplicated and moves to opposite poles of cell. Duplicated chromosomes condense. initiate micrtotuble formation eventually forming miotic spindle which attaches to the kinetochores. Protein structures associated with the centromeres of duplicated, condensed chromosome. Duplicated chromosomes are aligned bidway between spindle poles. Equatorial plate= metaphase place nuclear membrane is broken down. Membrane forms between daughter cells. daughter cells physically separate. Meiosis and gemetogenisis is the process by which the number of chromosomes in the reproductive cell is reduced from the diploid number (2n) to (n) Meiosis begins with a duplicated genome in which each chromosome has been replicated. You end up with 2 diploid genetically identical cells. Prophase 1 (meiosis: leptonema, zygonema, pachynema, diplonema, diakenisis. Chiasmata refers to the point where homologous chromosomes are crossing over and connected by recombination. What happens in prophase 1? answers: synapsis.
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