BI321F07 lecture 2a

BI321F07 lecture 2a - Biology 321 Genetics Fall 2007 Dr....

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Biology 321 Genetics Fall 2007 Dr. Sandra Schulze Sandra.Schulze@wwu.edu Office BI409 Office Hours: WF 4:00PM – 5:00PM Class time: lectures, tutorials, readings, problem sets • 3 days a week, 1hr, 20m per lecture . By popular demand, class will end 5 minutes earlier (so, at 9:45AM) in lieu of a 5 minute break. • Mondays and Fridays will cover lecture material, Wednesdays will usually be a tutorial. I will NOT answer assigned problems, but will provide help if requested. In addition I will help you with the EXTRA problems I provide for practice (some may come from the text). These EXTRA problems are for practice, not for grades. You don’t have to do them, but they will undoubtedly help. • The problem sets are assigned on a Friday, and due the following Friday at the beginning of class . If you come in late and hand them in late, you will get zero on that set. There is no exception to this policy. If you want to play safe, hand your solutions in to me the day before, or even earlier (for example, during my office hours). • At the end of the year I will grade ONE or TWO problems from each assigned set – this will form 25% of your final grade.
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• Reading assignments are required (you are responsible for material covered in the lectures AND the text – there will be considerable, but not complete, overlap!) • This course requires both LEARNING FACTS and SOLVING PROBLEMS • Exams will be similar to the problem sets Class time: lectures, tutorials, readings, problem sets Last lecture….
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• What events happen during Prophase I of meiosis that do not occur in Prophase of mitosis? – Synapsis: close pairing of homologs • What is crossing-over? – A precise breakage and reunion event that occurs between two non-sister chromatids Last lecture…. We will look at the genetic implications of recombination later in future lectures Sometimes referred to as “Classical Genetics” Text readings: Chapter 1 (all) and Chapter 2 (pp. 31-50). Note that many of the text problems from Ch. 1 & 2 will be assigned later. You can try them now but I will not cover them now. Problems from text you CAN do now: Chapter 1: none Chapter 2: #4, 5, 6, 8, 9, 14, 16, 17 Lecture 2: Introduction to Transmission Genetics
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What is Genetics? • Experimental science of heredity • Plant and animal breeders needed a better understanding of inheritance of economically important traits • Gregor Mendel: discovered principles of heredity • Today, genes are explained in molecular terms Transmission Genetics • Transfer (“transmission”) of observable traits from one generation to the next • Observable “traits” can be physical, chemical, behavioral – this is known as the phenotype • These “traits” are encoded by genetic information, which we now refer to as the genotype
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What is the relationship between genotype and phenotype? • To what extent do your genes determine
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This note was uploaded on 04/29/2008 for the course BIOL 321 taught by Professor Schultze during the Spring '08 term at Western Washington.

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BI321F07 lecture 2a - Biology 321 Genetics Fall 2007 Dr....

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