xid-109105_1 - Todaysfactoid [inBiologyintheNewsfolderonBB]

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Today’s factoid [in Biology in the News folder on BB] A recently discovered fossil bird named Andalgalornis was flightless witha large skull and a hooked beak like a raptor lived 60 mya Thought to be very agile Member of the Phorusrhacids ("terror birds") ‐ have been exInct for millions of years large predators Andalgalornis was 4.5 feet tall (skull 14.5 in high and very rigid) and weighed about 90 lbs. thought to be able to take down larger prey by grabbing and shaking side to side, and possibly a±acked by jabbing and retreaIng mulIple Imes ‐ based on CT scans and biomechanical analysis http://www.nsf.gov/news/news_summ.jsp? WT.mc_ev=click
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TA office hours John Waldron Tuesday ‐ 5:30 to 6:30 Friday ‐ 3:30 ‐ 4:30 Ruhani NanavaI Tuesday 3‐5pm Jamie Lee Monday 1‐ 2pm Tuesday 11:30am ‐ 12:30pm Jenny Abraham Thursday 1‐2pm Friday 2:30 ‐ 3:30pm
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an important SBU announcement Given the dramaIc and likely conInuing reducIon in New York State support of SUNY, Stony Brook University is reviewing all policies related to course enrollments with the goal of providing class spaces to as many students as possible. We are in parIcular reviewing the policy enabling students to retake courses. Students taking a fully enrolled class more than once prevent access to the class by other students. ±t is likely that the policy will change beginning Fall 2011 in order to reduce or in some cases prevent students from retaking courses that are on student records beginning in Spring 2011 or earlier. Thus, students should make every e²ort to achieve their best performance in courses during Spring 2011, as opportuniIes to retake courses beginning in Fall 2011 will be reduced. Summer and winter o²erings are not expected to be as impacted by these changes. For further informaIon as well as informaIon on how to achieve your best academic performance including study techniques, Ime management, and other advice, please visit your academic advisor. Charles L. Robbins, DSW, LCSW‐R Vice Provost for Undergraduate EducaIon Dean of the Undergraduate Colleges
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a concept that unifes our thinking about liFe on Earth the ‘Tree oF LiFe’ all liFe present on earth is descended From a single ancestral Form (a single celled, prokaryoIc organism) Darwin realized that his ideas about how species Form necessarily imply this phylogeneIc trees: species 1 species 2 species 3 species 4
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we will see many phylogeneIc trees in this course species 1 species 2 species 3 species 4 a phylogenetic tree is a hypothesis on the evolutionary relatedness of a group of species red circles are existing species blue circles (nodes) are ancestors at various points in the past -typically extinct the orange circle is the putative ancestor of all of the other species in the tree -typically extinct much more about phylogenetic trees in upcoming lectures
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This note was uploaded on 11/30/2011 for the course BIO 201 taught by Professor True during the Spring '08 term at SUNY Stony Brook.

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xid-109105_1 - Todaysfactoid [inBiologyintheNewsfolderonBB]

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