Cell and molecular biology genetics and evolution

BIO | 121 | Cell and molecular biology genetics and evolution | lecture_notes |1 Biology 121 - Introduction • Biology website: http://biology.missouristate.edu • Bio 121 lecture: http://courses.missouristate.edu/ChrisBarnhart/Bio121/ • Syllabus and course policy statement. • Textbook, lab manual Brooker 2 nd edition MSU bookstore with software, e-book $230 (ouch! But used for 122 also). You can get it much cheaper used fro

Bio 121 (999) 1 Cells • Units of life- organisms can be single cells, colonies or multicellular • Two basic types of cells – prokaryote and eukaryote • Prokaryote – Bacteria and Archaea • Eukaryote – Protista, Fungi, Plantae, Animalia Cell size • Prokaryote cells mostly 1-10 microns but can be as small as 0.2 microns or as large as 750 microns • Eukaryote cells m

BIO | 121 | Cell and molecular biology genetics and evolution | lecture_notes |Bio 121 (999) 1 Cells • Units of life- organisms can be single cells, colonies or multicellular • Two basic types of cells – prokaryote and eukaryote • Prokaryote – Bacteria and Archaea • Eukaryote – Protista, Fungi, Plantae, Animalia Cell size • Prokaryote cells mostly 1-10 microns but can be as small as 0.2 microns or as large as 750 microns • Eukaryote cells m

Biology 121 Practice Exam 1 2 12. Which statement is false? a. Elements are distinguished by their atomic number. b. Isotopes are distinguished by their mass. c. Two isotopes of an element have the same atomic number. d. Isotopes of an element differ in their chemical properties. 13. 14 C spontaneously turns into N at a constant rate, with a half-life of 5,600

BIO | 121 | Cell and molecular biology genetics and evolution | exam |Biology 121 Practice Exam 1 2 12. Which statement is false? a. Elements are distinguished by their atomic number. b. Isotopes are distinguished by their mass. c. Two isotopes of an element have the same atomic number. d. Isotopes of an element differ in their chemical properties. 13. 14 C spontaneously turns into N at a constant rate, with a half-life of 5,600

8 Evolution of drug resistance in HIV Population genetics & evolution • Species • Population • Gene pool • Genetic polymorphism • Allele frequency • Population genetics Bio 121 F/12 Lec-12 9 The shallow end of the gene pool Stability or change? • Stability – If each individual has equal probability of reproducing, allele frequencies will tend to be stable. •

BIO | 121 | Cell and molecular biology genetics and evolution | lecture_notes |8 Evolution of drug resistance in HIV Population genetics & evolution • Species • Population • Gene pool • Genetic polymorphism • Allele frequency • Population genetics Bio 121 F/12 Lec-12 9 The shallow end of the gene pool Stability or change? • Stability – If each individual has equal probability of reproducing, allele frequencies will tend to be stable. •

1 Viruses (Ch. 18) • Structure – Not cells, not alive. genome, capsid, envelope • Function – entry, replication, gene expression, self- assembly – Some assimilate into host genome – Origin as “runaway genes” Some representative viruses 2 Even smaller- virioids • Virioids: RNA with no capsid, and no structural (protein) genes • Form siRNA’s (small interfe

BIO | 121 | Cell and molecular biology genetics and evolution | lecture_notes |1 Viruses (Ch. 18) • Structure – Not cells, not alive. genome, capsid, envelope • Function – entry, replication, gene expression, self- assembly – Some assimilate into host genome – Origin as “runaway genes” Some representative viruses 2 Even smaller- virioids • Virioids: RNA with no capsid, and no structural (protein) genes • Form siRNA’s (small interfe

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