Lecture20 - ATTENTION BIOLOGY UNDERGRADUATES BIOLOGY DAY...

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ATTENTION: BIOLOGY UNDERGRADUATES BIOLOGY DAY 2014 WEDNESDAY, MARCH 12 BEFORE THE BSU SOCIAL 4:00 – 6:00 PM BIOLOGY AND PHYSICS LOUNGE, 9000 LEVEL Meet: Biology Faculty, Graduate Students and Staff Learn about: Undergraduate Programs in Biology Undergraduate Research Opportunities in Research Labs Co-op & Graduate School LAB TOURS FROM 3:00 TO 4:00 P.M. Meet at the biology front desk at 2:55PM, no sign-up required. Just show up and get tours through three interesting research labs! ALL BIOLOGY MAJORS OR INTENDED (OR CONSIDERING) BIOLOGY MAJORS WELCOME FOOD AND REFRESHMENTS PROVIDED 1
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Lecture 20: Life History Evolution II Wednesday, March 5 th Readings: 13.3 & 13.4 (both editions) 2
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Learning Objectives 1. Explain why we expect phenotypic plasticity for offspring size to evolve when organisms experience environmental heterogeneity. 2. Explain the predicted differences between egg laying behaviour on good vs poor hosts and describe how Fox et al. tested these predictions in seed beetles. 3. Explain the rate-of-living theory for senescence, identify the two predictions that follow from this theory and describe how you could test these predictions. 3
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Optimizing trade-offs: Response to environmental variation Survival depends on size of individual, but there is a fitness trade-off between offspring size and fecundity Optimal offspring size will vary with environment Fig 13.25 4e, 13.31 5e 4
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  • Spring '11
  • DAVIDSON
  • DNA, Senescence, phenotypic plasticity, egg size

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