By the end of the twentieth century, the peppered version of the moth was again more common than the black version. There is a progression of pathways in organisms found in Bacteria, Archaea, and Eukarya. Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? Both the larger population and the isolated population were maintained under identical conditions and allowed to mate randomly for another 20 generations. Formation of crude proteins occurs by chance and occurs regardless of atmospheric O2O2 levels or available free energy. The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. A thermometer requires 1 min to indicate 98% of the response to a step input. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. A group of researchers noticed that using a particular drug to treat cancer in mice would reduce the size of the tumor, but some of the tumor cells appeared to be resistant to the drug since some of these cells would increase in number over time. In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. C. After 1940, natural selection prevented any additional speed increases. Take a look at the Intro to Unit 7. Which of the following student claims is best supported by the data provided? The MC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. The species will undergo artificial selection, as the genes will adapt to warmer temperatures. Many of these species rely on pollinators that migrate based on changes in day length and the position of the Sun. C. Start each population with bacterial cells that have different genotypes to make sure there is enough genetic variation for selection to occur. WebStatistics and Probability questions and answers. (b) Explain why some roofs are "blown outward" during high winds. D. Cells with mitochondria were able to utilize metabolic energy more efficiently. Start each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same. C. Most of the species found in the first static period will be absent in the second static period. A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. Humans and mice share a recent common ancestor that had the 5-TTAGGG-3 repeat sequence in its telomeres. Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. Populations J1 through J5 are located in Jasper County. C. The woodlot is shaded, with little direct sunlight, and species 3, 4, and 5 are shade-intolerant canopy trees. Scientists studying the fossils observed patterns of changing shell shape in the mollusks. Scientists claim that some of the populations in Marion County are at an increased risk of decline or extinction. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. They found that although all 12 populations were exposed to the same environmental pressures, each population had differentiated from one another genetically after 10,000 generations. The SinoHimalayan fern, Lepisorus clathratus is widely distributed on the QinghaiTibetan plateau. Which of the following best predicts the impact on the lizard species if there is a gradual increase in the average temperatures found in both the lowlands and mountains in this region? B. Which of the following best explains the phenotypic pattern in the moths over time? Geographic isolation will create separate gene pools, leading to speciation over time. A group of researchers claim that chance events play an important role in the evolution of populations. To test their claim, they monitored 12 populations of E. coli for 10,000 generations under the same environmental conditions. D. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNA. These alleles code for glycoproteins that act as antigens on the red blood cells. A dark coat color provides camouflage to mice on the lava flow rocks; therefore, mice with dark coats have a lower predation rate in that habitat. In an experiment, the scientist creates two groups of twenty highly inbred mice. Because cheetahs, Acinonyx jubatus, experienced a bottleneck event about ten thousand years ago, living cheetahs exhibit very little genetic variation compared to other living species of large cats. Which of the following best explains the relationship between coat color and predation rate in the rock pocket mouse population on the lava flow rocks with respect to the different coat color phenotypes? The M4 and M5 populations have the lowest genetic diversity of all populations. One group is given food with an added substance that is known to be a mutagen. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? Select the best alternate hypothesis to support this claim. D. Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation. D. Grey Box, grey box and grey box. C. Random mating within each population A. A shift to less polluting fuel in the twentieth led to cleaner air and a lightening of the moth's normal habitat. A. A scientist wishes to provide experimental evidence to support the model shown in Figure 1 by demonstrating the ability to synthesize an RNARNA molecule. Because the mice are highly inbred, they are essentially identical to one another.