Old Exam

Old Exam - Multiple choice questions each worth 1 pt....

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1 Multiple choice questions each worth 1 pt. Choose the one best answer. Bubble in Version A on your Scantron Form. Station 1 1. Which treatment(s) represents intermorph competition? a. A b. B c. C d. A and B e. C and D 2. If the plants from treatment C were crossed with the plants from treatment D, what is the probability that the seeds produced will have the genotype yy ? Recall that the yellow green plants have the genotype yy. Assume green morphs are all heterozygous . a. 1.0 b. 0.75 c. 0.5 d. 0.25 e. 0.0 3. You measured several components of fitness in lab for these plants as proxies of fitness. Of the choices below, which component would provide the most accurate measure of the plant’s true fitness? a. root mass relative to the shoot length b. total number of flowers c. internode length on the stem d. size of the flowers relative to other plants e. number of seeds produced that germinate Station 2. 4. Using the caliper, what is the size of the object in mm labeled “A” on the block of wood? Measure the flat edges. a. between 0.5 and 0.9 mm b. between 11.0 and 11.5 mm c. between 11.9 and 12.3 mm d. between 0.1 and 0.5 mm e. Between12.6 and 12.9 mm
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2 5. In order for natural selection to produce a plot like that seen in Figure B, what must be true of the phenotypes for the original bug population prior to their feeding on golden rain tree or balloon vine seeds? a. the population had bugs with beaks almost all near average size b. there was variation in the number of males and females in the original population c. the fitness of bugs with shorter beaks was greater than fitness for bugs with longer beaks in the original population d. in the original population some bugs had longer beaks and others had shorter beaks e. choices A and B are true 6. Directional selection for bugs that originally fed on golden rain tree and then switched to feeding on balloon vine would most likely result in: a. shorter legs on average for subsequent generations b. larger body size on average for subsequent generations c. greater variation in the phenotype for subsequent generations d. larger beaks on average for subsequent generations e. more females than males in the population for subsequent generations Station 3. 7. Which organism(s) is a photoautotroph?
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This note was uploaded on 03/23/2011 for the course BIS 2B taught by Professor Strong during the Spring '08 term at UC Davis.

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Old Exam - Multiple choice questions each worth 1 pt....

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