Competition predation forces 27 5pts name the five

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competition, predation) forces. 27. (5pts) Name the five assumptions of the Hardy Weinberg Equilibrium a. No mutation b. Very large population size c. No migration c. Random mating e. No selection 28. (4pts) A population of insects has two alleles that encode for long antennae and short antennae with the allele for short antennae dominant to the allele for long antennae. In a random sample of 100 insects from a large population obeying Hardy Weinberg assumptions, you find 64 insects with long antennae. What are the frequencies of the long and short alleles? Frequency of Long allele = 0.8 Frequency of Short allele = 0.2 29. (4pts) The behavior in which an individual helps another reproduce not reproducing themselves is known as (one word) _____altruism _________. In which protist below does such altruistic behavior takes place and cheater genotypes are known that refuse to do their fair share of helping others reproduce? a) Brown algae b) Dictyostelium c) Diatoms d) Plasmodium
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 10 Section or TA ________________ Name_________________ 30. (6pts) Why is following picture is a misleading view of evolution. 1. Humans are not directly descended from chimps 2. There was no linear progression in evolution to Homo sapiens . 3. Humans and chimps are both endpoints of evolution (so far). 31. Darwin used the idea that individuals are engaged in a struggle for existence due to limited resources and the possibility of exponential population growth. 31a (2pts) What was the name of the person whose work most influenced Darwin on this point? Malthus 31b (2pts) What is the term that represents the maximum number of individuals a population can maintain given finite resources? Carrying capacity 31c. (2pts) What is the name of the single-species population growth equation in which that term appears? Logistic growth equation 32. (4pts) What is required for evolution by natural selection to operate? (one sentence only) Heritable variation in fitness
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BILD 3, Spring 2009. Dr. Kohn FINAL Page 11 Section or TA ________________ Name_________________ 33. The monster below is Kamacuras, one of Godzilla’s many giant competitors. Which phylum does Kamacuras belong to? What feature in this picture is consistent with that phylum? Why do members of this phylum never attain large body sizes in comparison to vertebrates like Godzilla. a. Phylum (2pts) ______ Arthropoda ________ b. Feature (2pts) _____ Jointed appendages __ c. Reason this phylum never attains large body size (4pts): 1. Exoskelton inefficient at large sizes (would need to be very thick to support a large body. 2. Gas exchange through exoskeleton by means of tracheal tubes very inefficient at large sizes. 34. A dominant male silverback gorilla is in control of a group where he alone has access to multiple females for reproduction. 34a. (2pts) What type of mating system is this? (Be specific, one word) polygyny 34b. (2pts) From this, would you expect there to see sexual dimorphism in gorilla populations? ( yes /no , circle one).
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