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02-03-16 notes

by: Leanna Widhalm

02-03-16 notes BIOL 312

Leanna Widhalm
GPA 3.0
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About this Document

insect sex, evolution, red-backed spider
Professor Simmons
Class Notes
evolution, sex, spider, insects, trade-off, constraints




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This 1 page Class Notes was uploaded by Leanna Widhalm on Wednesday February 3, 2016. The Class Notes belongs to BIOL 312 at University of North Dakota taught by Professor Simmons in Spring 2016. Since its upload, it has received 12 views. For similar materials see Evolution in Biology at University of North Dakota.


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Date Created: 02/03/16
02-03-16 notes Use a phylogeny to track disease evolution and host choice Outline typical evolutionary experiments Distinguish between evolutionary tradeoffs and genetic constraints Discuss sexual asymmetry & predict which sex will be choosy or promiscuous Trade-Offs and Constraints H1: The more closely female flowers resemble male flowers, the more they are visited by bees Looks like stabilizing selection H2: The more closely female flowers resemble the most rewarding male flowers, the more often then will be visited by bees Looks like directional selection Plants depend on pollinators for sex Stabilizing selection limits variation in a species Directional selection – adapts to get better with “fitness” – reproduction The more flowers there are in a bunch, the smaller the flower is. The less amount of flowers there are in a bunch, the bigger the flower is. Fuscia – When the plant is green, pollination occurs. When it is green it produces nectar and while the pollinating happens, the plant turns red. When the flower is red, it doesn’t produce nectar Butterflies are the only insect that can see red.


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