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Cards In This Set
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What is cell division?
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It is part of reproduction, growth and repair.it involves the distribution of identical genetic material DNA to 2 daughter cells
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What is mitosis?
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Thre process by which 2 new daughter cells are generated
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What is mitosis useful for?
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Repair of tissuesgrowth
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What is meiosis?
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The process by which gametes are produced
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What happens during interphase?
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G1:cells grow rapidly wilie performing metabollic processes-makes proteins needed for DNA replication-copies some of its organelles in preparation for cell divisionS:cells' DNA is copeid during cell replicattion -all of the chromosomes have now been replicatedG2: makes final preparations to divide-makes additional proteins & organelles such as microtubules (required for mitosis)
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What can be observed during interphase?
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-no chromosomes are visible -DNA & histones & centrioles all replicated
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What happens during prophase?
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-chromosomes condensed and visible-centrioles at opposite poles of the cell- nucleolus diappears
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What happens during metaphase?
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-nuclear envelope disappears-chromosomes align at thee equator of the cell-spindle fibres connect centrioles to chromosomes
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What happens during anaphase?
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- centromeres split allowing chromatids to seperate-chromatids move towards the poles, centromeres first (pulled by motor proteins walking along the microtubule tracks)
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What happens during telophase?
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-spindle fibres disperse-nuclear envelope forms-chromosomes uncoil & become invisible
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What happens during cytokinesis?
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in animal cells
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The phases of mitosis
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