Lecture #2 - Labs start this week! You need to attend lab...

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1 •Labs s ta r t th is week! •You need to attend lab to secure your registration •Whe re my lab? – go on to myCourses -> my tools -> my grades, under lab room 2 Clicker Exercise •Ge t ou t you r c l icke rs •Con f i rm the channe l : –Press Go – 41 – Go or CH – 41 - CH •Answe r se r ies o f questions. •A f te r each , be su g reen light flashes when you respond to a clicker question G O
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3 Have you registered your clicker on MyCourses? 5% 97% 1. Yes 2. No 4 Pre-lecture vocabulary It is expected that you understand the following basic terms and concepts prior to this lecture. From section 1.2 & ch. 25 • prokaryote • eukaryote •u n i c e l l u l a r •m u l t i c e l l u l a r e t a b o l i sm •p h o t o s y n t h e s i s •a e r o b i c n a e r o b i c From section 4.2-4.3 •c h e m i c a l e v o l u t i o n spontaneous generation o n o m e r polymer o n d e n s a t i o n r e a c t i o n (polymerization) m i n o a c i d •n u c l e o t i d e •D N A , R N A ( n u c l e i c a c i d ) a t a l y s t
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5 BIOL 111 – Organismal Biology Lecture 2 Origin and evolution of life 7 September 2010 6 Origin and evolution of life lecture outline 1. Origin of life 2. History of life 3. Modern life
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7 Origin and evolution of life 8 Evolution Genetic and resulting phenotypic change (observable property) in populations of organisms from one generation to the next •H ow d o s c i e n t i s t s w o r k o u t e v o l u t i o n a r y relationships? –Foss i l reco rd –Mo rpho log ica l compa r isons –Deve lopmen t lecu la r ana lyses –Behav io r
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9 “Living fossils” – The oldest species brachiopod = 500 myo horseshoe crab = 445 myo Ginkgo biloba = 270 myo coelocanth = 410 myo 10 Morphological comparisons - Why is choking so common in humans? Acanthostega
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11 Genetic analyses our revolutionizing our understanding: DNA analyses indicate that Neanderthals and Humans interbred •N e a n d e r t h a l D N A e x t r a c t e d f r om t h e leg bones (which were ~40,000 yrs old) •6 0% o f t h e N e a n d e r t h a l g e n e h a s now been sequenced •C p a r i s o n s w i t h h um a n g e n e done this year, Neanderthal DNA fragments are scattered through genome of humans of non-African ancestry •G e n e t i c a n a l y s e s a r e g r e a t l y advancing our understanding of evolutionary relationships •O u r t e x t b o o k i s a l r e a d y o u t o f d a t e ! 12 What is your belief regarding the origin of life on Earth? E x t ra -terrestrial source Ch emi ca l ev olu tion . . S p ont a neou s genera. .. O th er e an io n Un de c i d ed 10% 62% 12% 11% 11% 1. Extra-terrestrial source 2. Chemical evolution on Earth 3. Spontaneous generation 4. Other explanation 5. Undecided
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13 Origin of life on Earth 1. Extraterrestrial source? 2. Chemical evolution on Earth?
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This note was uploaded on 10/05/2010 for the course BIOL BIOL 111 taught by Professor Roffey during the Fall '09 term at McGill.

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Lecture #2 - Labs start this week! You need to attend lab...

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