Gen Bio ii Exam 1 Study Guide and answers
Gen Bio ii Exam 1 Study Guide and answers BIOL1082
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This 5 page Study Guide was uploaded by Emmanuel Notetaker on Monday January 18, 2016. The Study Guide belongs to BIOL1082 at University of Cincinnati taught by Dr. Beyette in Summer 2015. Since its upload, it has received 235 views. For similar materials see Biology II: Evolution, Physiology, and Ecology in Biology at University of Cincinnati.
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Date Created: 01/18/16
1 General Biology ii Exam 1 Study Guide Living things are said to have organized structure They are composed of cells. Because Our body works to keep our temperature constant Living things maintain homeostasis at about 98.6 This is an example of : If you put a plant by a window, the stem will lean Living things respond to stimuli in the direction of the sun. This is an example of which characteristic of life? What condition is necessary for a population to A) Mating must be random be a equilibrim? B) No mutations can occur. C) The population must be large. D) Gene flow must be prevented. E) All of these are Necessary to beat. Which of these is NOT a postulate underlying evolutionary mechanisms? A) Homologous structures. A) Homologous Structures. B) Variability. C) Reproductive success. D) Inheritance E) Natural selection Ostrich birds have wings but cannot fly. Vestigal Because these structures are nonfunctional and do not help the ostrich take flight, they are called: In a certain species of salmon, some adult males are extremely large compared to the females. There are Directional Selection no small or intermediate sized adult males in the population. This is probably due to: From an evolutionary point of view, what important Gene flow process occurs when a young male baboon leaves the troop that he was born to join another troop in a different location? Which group of animals was the first to evolve a Reptiles waterproof egg, allowing them to move away from water and deeper onto dry land? 2 Which of these is not considered as a piece of evidence Comparative anatomy B) Fossil records D).Random mating C) Embryological similarity D) Random mating E) Biochemical and genetic analysis Oparin,Haldane, Miller and Urey were all scientists interested in prebiotic chemical evolution. Eventually Small organic molecules their ideas about the early earth led to laboratory experiments with gas mixes and electrical discharge that produced: A single species of finch from South America was displaced to a new habitat in the Galapogos Islands Adaptive Radiation and evolved rapidly into several new species as it exploited the new resources. What occurred in these finches? In the late 1700's two populations of trout became isolated when an earthquake altered the path of a river.Now, hundreds Allopatric speciation of years later the populations can no longer successfully breed with each other even when they are both moved to a new pond. These organisms have undergone: A population of hamsters includes 16 with black fur and 5 with white fur. The allele frequency is 70% black and 30% white. Many years later this same population of 20 hamsters still They are evolving contain15 with black fur and 5 with white fur, but the allele frequency has changed to 50% black and 50% white. What can we conclude about this population? The earliest living organisms were Prokaryotes. A pet store puts both Norway rats and black rats two different species of rats in the same cage. If mating occurs between the Hybrid invailabilty two species, fertilization is successful but the pregnancy will not succeed because the embryos do not develop properly. This is an example of? In many species of songbrids, males sing loud, elaborate songs to attract females. Each species has a different song. This is an example of: 3 Ans : Behavioral isolation. What was Lamarck's view of evolution? Ans :Organisms evolve because they inherit acquired characteristics California has about 3,000 sea otters living along its coastline. All are descended from a small group of about 50 otters that were overlooked by fur hunters during the late 1800s. The California sea otter population thus has little genetic variability. By transplanting Alaskan otters into Californian waters, in the hope that they will interbreed with the Califoria otters. In this case, we would be attempting to mitigate the effects of ______________ by introducing the process of _________. Answer: a population bottleneck ; gene flow For evolution to occur allele frequencies must change Answer: TRUE Population bottlenecks are caused by drastic reduction in the population size due to a natural catastrophe or overhunting. These population bottlenecks events can be problematic for small populations because population bottlenecks only occur in large populations, they do not cause any problems for small populations. Answer: There is a lack of genetic variation in the population. Individuals with a selective genetic advantage are more likely to reproduce, so there alleles are passed on to the next generation. This is called: Answer: Survival of the fittest. Describes allele frequency: Answer: The number of times a particular allele is present in the gene pool. One of the lines of evidence that Lead Darwin to propose his theory for evolution: Answer: The diversity of plant and animal species he catalogued during his travels. Variations within a population arise from: Answer: Small differences in DNA Fossils are evidence that evolution occurs over time. This is because: Anwer: Older fossils have a simpler body structures compared to the present day organisims. Comparative anatomy between species reveals similarities that can only be explained by: 4 Answer: Shared ancestry. Male fish that display a bright blue color attract more female mates, but they also attract more predators. Continuously maintaining that blue gene in the population despite the increase in predation risk is an example of: Answer: sexual selection A gene can have many different versions. These versions are called: Answer ; genotypes For a population to remain at equilibrium: Answer: There can be no mutations within the population. Competition is more intense among members of the same species than among member of the different species Answer: True Because they are members of the same species, they have the same niche, that is the same needs for their food, shelter, breeding etc. Since they overlap on all levels, they compete for everything, whereas members of 2 different species will only compete with some common needs. Stabilizing selection favors individuals with: Answer: Intermediate value traits. When two or more differning traits (example: large and small beak size) are maintained in a population, the resulting population is said to exhibit: Answer: Disruptive selection. Fossils of the most recently evolved species would appear in which of these layers of rock? Answer: Uppermost layer. When two species interact extensively, each exerts strong selective pressures on the other. This feedback results in Answer: Conevolution Five requirements for equilibrium population. HardyWeinberg 1) No mutation 2) No gene flow 3) Large population 5 4) Mating must be random 5) No natural selection Frances Redi and Louis Pasteur: Provided proof that spontaneous generation did not exists IE maggots birth meat, broth birthed microorganism. Chemical evolution preceded the appearance of the first life forms on Earth. atoms > molecules> more and more complex, organic molecules > cells >life
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