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Question: Assume you have 2 tubes containing cultures of genetically distinct bacterial strains. You know that when you mix the two together, you get Horizontal gene transfer (HGT), but you do not know what genetic exchange mechanism is accomplishing this transfer. Prior to mixing the strains, you add an enzyme that degrades any DNA it comes into contact with the tubes and allow it to incubate briefly. You then mix contents of both tubes together and find that you are no longer able to achieve HGT. Both cultures are still completely viable. Name the 3 methods of HGT that we discussed in class. Which of these is the MOST likely process you interfered with? In your answer, explain your observations and why the other two processes are not likely to be involved.
Assume you are analyzing the function of an unknown drug that you suspect alters metabolism in human cells. You add the drug in different amounts in a colony of cells and find that above a certain concentration,
Assume you survey a population in Hardy-Weinberg (H-W) linkage equilibrium with two loci C,c and D,d. The estimated frequencies of these alleles are:
Discuss how many molecules of histone 2A would be required in a typical human cell just after the completion of S phase, assuming an average nucleosome spacing of two hundred bp?
The integrity of the plasma membrane is essential for cellular survival. Could the immune system utilize this fact to destroy foreign cells that have invaded the body?What physical and metabolic constraints limit the cell size.
What are some reasons for reestablishing wolves in Yellowstone National Park? What effects might the reintroduction of wolves have on the ecological communities in the region? What might be completed to mitigate the conflicts between ranchers and wol..
What are genotypes of the adult that were crossed. 0 percent of a population died from sunburn, of the 10 percent who died 10 individuals were albino and the rest were split evenly between heterozygous (Gg) and dominant individuals (GG). So my questi..
Provide the number of divisions, number of daughter cells, what each process creates, and the steps for both mitosis AND meiosis.
Comparisons of amino acids sequences can shed light on the evolutionary divergence of related species. Would you be expecting all the proteins of a given set of living species to demonstrate the same degree of divergence.
Compare and contrast, in depth, the cellular processes of mitosis and meiosis. Include interphase in your explanation. Chromosomal movement and status must be included in your answer. You may include a diagram to explain your answer but you should..
A bowl of potato salad was left on picnic table for three hours on hot summer day. The microbial load was 300 CFU/g when the salad was put on table.
why materials move from high to low concentration. Isn't this just a waste of energy.
The secretory coil fills the lumen with a NaCl solution that is isotonic with the blood plasma. As this solution moves upward through the reabsorptive duct,
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