BIOL K101 1st Edition Lecture 18Outline of Last Lecture Small Molecules and Ions (G protein Coupled Receptor)Secondary messangerscAMPCalcium ions and Inisitol trisphosphate (IP3)MitosisPurposeGrowthReplacementRepairOne duplication: One divisionChromosomesDNA + protein = chromatinCondensed chromatin = chromosomeDuplicated chromosome = 2 chromatidsDivision produces 2 chromosomesCell Cycle and MitosisStagesG1SG2MG0Stages of MitosisProphaseMetaphaseAnaphaseTelophaseCytokinesisAnimalsCleave furrowContractile RingPlantsCell plate (phragmoplast)Outline of Current Lecture These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.ChromosomesDNA + protein = chromatinCondensed chromatin = chromosomeDuplicated chromosome = 2 chromatidsDivision produces 2 chromosomesCell Cycle and MitosisStagesG1SG2MG0Stages of MitosisProphaseMetaphaseAnaphaseTelophaseCurrent LectureMitosis- cell division. We have 46 chromosomes. Before mitosis occurs we have 46 single chromosomes, during the s phase they double and split. Interphase includes centrosomes with centriole pairs, chromosomes that are duplicated and unpaired, nucleus, plasma membrane, and the nuclear envelope. Prophase you start to see the early mitotic spindle and two sister chromatids of the chromosomes. Metaphase the chromosomes line up in the middle of the cell.Anaphase the sister chromatids pull apart towards the centrosome of the cell. During telophase a cleavage furrow starts to form and the cell splits into two. The process of mitosis has evolved over the years. Prokaryotes did binary fission. Dinoflagellates, diatoms, and then most eukaryotes now do mitosis. Todays lecture was
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