Lecture 7 - Biology 313 Lecture 7 Sept 8, 2010...

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Biology 313 Lecture 7 Sept 8, 2010
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Wednesday 8 September  Bessey Room 210 @ 7 pm FREE PIZZA & POP! (for dues-paying Dr. Amy Toth, EEOB Department “Genomics and sociality: evolutionary insights from highly social bees and wasps”
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p-value > 0.9 ( i.e. , a deviation between observed and expected due to chance is likely , thus accept the null hypothesis 0.362 Step 1: Find df = 3 Step 2: Read over to χ 2 = 0.362 Step 3: Read up to p-value = >0.9) TO CLARIFY from LECTURE 6
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Chapter 4 Sex determination and sex-linked characteristics 4.1 Sex Is Determined by a Number of Different Mechanisms (last time, I started to discuss XY system) 4.2 Sex-Linked Characteristics Are Determined by Genes on the Sex Chromosomes Reading, Chapter 4: entire PROBLEMS: Worked Problem (p. 87); Worked Problems 1-3 (end of chapter); Application questions (end of chapter): do all starred problems (16 total)
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Review: Role of Sex Chromosomes in Humans (X-Y system) The X chromosome contains genetic information essential for both sexes; at least one copy of an X is required. The male-determining gene is located on the Y chromosome. A single Y, even in the presence of several X, still produces a male phenotype. The absence of Y results in a female phenotype. 2Xs are needed for female fertility; more X’s upset normal development
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The male-determining gene S ex-determining r egion Y gene ( SRY gene) Determines maleness in all mammals Discovered 1990 SRY
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This note was uploaded on 10/06/2011 for the course BIO 313 taught by Professor Rodermel during the Spring '11 term at Iowa State.

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Lecture 7 - Biology 313 Lecture 7 Sept 8, 2010...

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