BIOL10004 Lecture Notes - Lecture 5: Nucleolus, Sister Chromatids, Homologous Recombination

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When growing cell reaches certain size &replication is complete, new dna molecule has separate point of attachment to plasma membrane. Ftsz protein is a homologue of eukaryotic cytoskeletal protein tubulin (flagella,mitosis) bacteria) Involved in division of chloroplast & mitochondria (former endosymbiotic. Blast search sequence genomes of hundreds of thousands of organisms, sequence of proteins of hundreds of thousands of proteins. Time for growth, cells spend most of their time here. Decision to progress to s phase- commits cell to rest of cell cycle. G0- eukaryotic cells that don"t divide any further. First check point at end of g1- cell looks at cell carefully, am i big enough to divide: s phase: synthesis phase. Chromosomes divide- nucleus of cell becomes bigger. Identical copies of chromosomes sister chromatids: remain together, not considered separate chromosomes until separation during mitosis, g2 phase: second gap phase. Check point- has the cell replicated all chromosomes: m phase: mitosis.

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