RU BL 262 - Examination (4 pages)

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Examination



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Examination

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Pages:
4
School:
Regis University
Course:
Bl 262 - Principles of Biology - Organismic
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Name BIOLOGY 262 FALL 2005 IN CLASS EXAMINATION 2 PART 1 Date MULTIPLE CHOICE For the following multiple choice questions circle the letter in front of the response that best answers the question or completes the sentence 20 2 each 6 Which of the following traditional 1 Which of the following is an assumption Linnean taxonomic ranks is just above of scientific philosophy Class the next most inclusive taxon a Different events cannot have the a Genus same cause b Kingdom b Only experimental observations can c Order prove hypotheses to be true d Phylum c Senses never reflect reality e Species d The universe is ordered e None of the above None are assumptions 7 Which of the following is when a bacterium takes in DNA from the 2 In a population at Hardy Weinberg environment around the bacterium equilibrium if the frequency of AA is a binary fission 0 09 then what is the frequency of Aa b conjugation a 0 03 c transcription b 0 21 d transformation c 0 33 e None of the above d 0 49 e None of the above 3 As described in The Evolution Explosion Alexander Flemming Discovered the antibiotic penicillin by a conducting clinical trials b examining competition among soil bacteria c inadvertently curing a skin infection when working with penicillin d observing a mold inhibiting growth in a bacterium on a Petri dish 4 Death of small and large sparrows during storms as described in The Evolution Explosion is an example of a artificial selection b directional selection c disruptive selection d sexual selection e stabilizing selection 5 Which of the following is an assumption of the Hardy Weinberg theorem a genetic drift occurs b gene flow occurs c mutation occurs d natural selection occurs e random mating occurs 8 If a population of 1 000 is undergoing exponential growth with a yearly intrinsic rate of increase of 0 50 then what is the size of the population after 2 years a 500 b 750 c 1500 d 2000 e None of the above 9 If a population of 2 000 is undergoing logistic growth with a yearly intrinsic rate of increase of 0 10 and a carrying capacity of 4000 then what is the size of the population after 1 year a 2000 b 2100 c 2200 d 4000 e None of the above 10 Which of the following is a correct species name a Staphylococcus aureus b Staphylococcus Aureus c Staphylococcus d aureus e None of the above SHORT ANSWER For the following briefly answer as appropriate 10 1 Look at the real data below Male 2 Identify three things that are wrong or widowbirds have long tails Males with misleading about this illustration 6 more nests in their territories have more offspring Nests are built by females who select among males Mean number of nests in each territory Normal males 0 9 Males with lengthened tails 1 9 Males with shortened tails 0 3 Briefly explain what the data above show and indicate which evolutionary phenomenon this demonstrates 4 Hint this example is from p 473 in the textbook a b c DEFINITIONS For the following BIOLOGICAL words or phrases define them as accurately and concisely as possible 20 4 each 1 Biological Evolution 2 Biological Species Concept 3 Evolutionary Species Concept 4 Natural selection 5 Science BIOLOGY 262 FALL 2005 EXAMINATION 2 PART 2 Date Name FREE RESPONSE QUESTIONS PROBLEMS For the following address each in as concise and lucid a manner as possible Do NOT exceed the space provided 50 1 Use the data below to construct a phylogenetic tree of the species in the left column Show the derived traits on your phylogenetic tree OG Outgroup Antelope Cow Whale Walrus Wolf Opossum OG 14 horns stomach chambers carnassial teeth pouch hooves present present absent absent absent absent 4 4 4 1 1 1 absent absent absent present present absent absent absent absent absent absent present present present absent absent absent absent 2 On August 27th 1883 the island Krakatau in Indonesia exploded in a volcanic eruption that destroyed all life on the island The species found on the island after the eruption were monitored by biologists The land birds and plants found on the island are presented during the 100 years after the eruption The survey in 1933 found the island to be covered in a rainforest similar to those found nearby islands 12 Dates when surveys occurred of land bird species of plant species 1883 1908 1919 1933 1951 1984 0 13 28 29 33 36 0 105 216 271 285 291 Krakatau Bird Species 1883 1984 a Appropriately graph the number of species of birds and plants on the island after the eruption Label axes What pattern do both exhibit Suggest an explanation for this pattern b Name and BRIEFLY explain in 1 2 sentences the process whereby an island of bare rock in 1883 became an island covered by tropical rainforest 50 years later Krakatau Plant Species 1883 1984 3 Answer the following based on this hypothetical scenario The Regis Regis Island Island tortoise lives in two populations on Regis Island one in the northeastern lowlands and the other in the southwestern lowlands Both maintain an approximately constant population size This tortoise cannot survive for long at higher elevations in the mountains at the center of the island However individuals occasionally move through a mountain pass in the north and across a very narrow lowland area to the southeast Breeding Regisiba Island the in this tortoise requires a warm moist breeding season because of climate North is at the top of the map in the northeast breeding never occurs in the northeast population a Briefly describe the subpopulation interpopulational dynamics between the northeastern and southwestern Regis Island populations Indicate which Regis Island population would be most important to preserve if people were going to destroy the tortoises natural habitat to build a hotel and why 4 In 1980 a few biologists discovered four Regis Island tortoises on Regisiba Island an island that previously had no tortoises It was thought that they may have floated there on mats of vegetation from Regis Island after a very very rare hurricane Tortoises cannot swim The population on Regisiba was counted every 5 years 1980 4 tortoises 1985 10 tortoises 1990 250 tortoises 1995 750 tortoises 2000 900 tortoises 2005 910 tortoises b Explain the pattern of population growth of the Regisiba tortoises below and briefly explain what caused it to proceed in this way 4 In 2005 people studied the population genetics of the A gene in 200 individuals each from each population southwestern Regis Island population 32AA 96Aa 72aa Regisiba Population 200AA 0Aa 0aa northeastern


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