Lecture 12 Feb 21

Lecture 12 Feb 21 - 17:33 Mitosis: cell division Growth...

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17:33 Mitosis: cell division Growth Development Prokaryotes v. eukaryotes Reproduction in prokaryotes Division 6 major phases cell cycle Uses Reproduction Growth and development Tissue renewal mRNA makes a complementary nucleic acids, so if we bind an antibody to it, then it can  become a probe for us to look at different genes All bacteria divide by cytokinesis Problems Each strand of DNA is about 2-3 feet long if extended It has to fit inside a microscopic cell! DNA is wrapped around proteins called histones Interphase G (Gap 1) S G 2  (Gap 2) Mitotic (M) phase Mitosis Cytokinesis
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Centromere in chromosome Chromosome has 2 different upper and lower lengths P arm = shorter Q arm = longer Super compact, completely inert metabolically, doesn’t allow itself to be copied Duplicates   stick together   sister chromatids Identical twins Protein cohesins – bind the chromatids together 
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Lecture 12 Feb 21 - 17:33 Mitosis: cell division Growth...

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