IMED1002 Lecture Notes - Lecture 8: Macromolecule, Centrosome, Nondisjunction
15 Aug 2018
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Lecture #22: cell cycle, mitosis, and meiosis: 24th april 2018: Realise the importance of the cell cycle. Understand the key steps in cc, mitosis and meiosis. Appreciate the differences yeetm between mitosis and meiosis. Allows for: reproduction, growth, development yeet tissue renewal (replacement of cells) Dna must be faithfully replicated and evenly distributed between the 2 new cells. Daughter cells also need other cell components, organelles, yeet, cytosol, plasma membrane. Human are diploid- pairs of chromosomes- pairs do not stay together all the time. Each species has a unique chromosome complement- shape, size and number. Sequences are generally the same, minor differences give genetic variation of a species. Chromatin packaging density accounts for bands- dark bands more tightly packaged (heterochromatin), light bands more transcription (euchromatin) Human cell nucleus contains 2m of dna. Each dna yeet double helix is packaged into a chromosome. 10 000 times shorter than its expected length. Basic proteins, rich in +ively charged amino acids.
