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Biology quiz

over chapter 9 and 10

QuestionAnswer
Which of the following statements does not cause natural selection? Survival and reproduction are nonrandom. The alleles found in the organisms that survive long enough to breed are passed on to offspring. The three other statements all cause natural selection.
What type of selection results when the average variant in the population has the highest fitness? variants stabilizing selection. Directional causes population trait 2 move n a particular direction. Diversifying causes da evolution of population n 2 directions at once. Artificial selection occurs wen humans deliberately control survival n reproduct
True or False: Natural selection can cause new traits to arise. Natural selection cannot cause new traits to arise because it is dependent on the alleles already present in the population.
What is often the result when people stop taking their antibiotics when they feel better? The antibiotic will kill off most of the bacteria, causing the patient’s symptoms to improve. The small number of resistant bacteria takes longer to kill. If the antibiotics are discontinued then the drug-resistant bacteria can multiply.
Which of the following statements is not an efficient way to combat drug-resistant pathogens? The majority of nonresistant people are not exposed to the pathogen and will be able to reproduce, causing nonresistant variants to stay in the population. Drug cocktails and long antibiotic courses are efficient ways to fight drug-resistance.
What will the fly population look like after several generations? The flies with the fastest alcohol-metabolism rate produce the most offspring. This will increase the frequency of the mutant allele after several generations.
Which of the following is not an example of a scientific theory? Intelligent design is not a scientific theory because it is not testable. The theory of gravity describes the motion of planets. The theory of evolution is a principle for understanding how species originate.
Created by: jbrannon1
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