Biol 322 Exam 1 Practice Questions and 100% Correct Answers

Charles Darwin was the first to propose thatthe changes that have occurred in species are primarily a result of natural selection Which was correct regarding the sources of data for testing models of evolution?all of the above (evolutionary biologists still use fossil data, embryological data was available before molecular data, behavioral data is often used in evolutionary studies) One of the basic ideas in the theory of evolution is that the more closely related two species are:the more recently they shared a common ancestor What was the approximate time when Homo sapiens began to use domestic crops and settle in one habitat?10,000 years ago Artificial selection could be described as all of the following except:increase in the frequency of treats are associated with increased survival and increased reproductive frequency in the wild We often see problems with evolving pesticides in insects. Which of the following statements best describe these changes?There are some variants in the treated population that already have mutations that confer resistance to the pesticide treatment. Such variants will survive and proliferate The development of antibiotic resistance is the result of:natural selection The antibiotic ciprofloxacin is often prescribed for serious cases of food poisoning caused by the bacterium Campulobacter jejuni, which is common in the intestines of farm animals and is not harmful to them, but may cause acute food poisoning in humans. Which of the following is correct given prolonged use of this antibiotic?Ciprofloxacin treatment kills or halts the growth of the sensitive strains, yet the resistant strains survive Penicillin was once considered a miracle drug that would permanently eradicate tuberculosis and many other bacterially caused diseases. Today we encounter resistance to this and many other antibiotics in numerous bacterial species. What could have we done differently to slow the evolution of penicillin resistance?Penicillin should not have been prescribed unless necessary The woolly mammoth (Mammuthus primigenius) once lived in the northern hemisphere and was a contemporary of modern humans. Due to various factors including human hunting, the mammoth became extinct approximately 10,000 years ago. Look at the following phylogeny diagram and determine which species are the closest relatives of the woolly mammoth.Asian elephant (elephas maximus) (they share the most recent ancestor) Emperical research is very important in evolutionary biology. There are two main types of such research, which could be classified as:observation and manipulation Charles Darwin and his friend, Thomas Henry Huxley, proposed that humans share a common ancestor with the great apes (chimpanzees, gorillas, and orangutans). How did they come up with such a hypothesis?The looked at the morphological characteristics of the living speci