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Discussion Topic
Natural Selection
A novel fungicide is introduced and widely applied to cereal crops. After five years, resistant genotypes of the fungal pathogen are detected at a frequency of about 1%; resistance is widely distributed across the pathogen's range. Within two years, these have become so common that the fungicide becomes worthless.
Explain how this pattern can be explained by the basic features of natural selection. Include in your answer:
The surface area of the lungs in humans is about 70 square meters. how can this be so if the lungs are located in the small space of the thoracic cavity? What role do alveoli play in the nature of the surface area
Explain the reverse transcription reaction (what are the components of the reaction? What are the possible primers for the reaction and how do they differ from each other?)
You perform a forward genetic screen to look for Arabidopsis thaliana mutants that are altered in cold stress responses. You find two mutants with opposite phenotypes.
A number of theories have collective behavior have been reviewed in chapter 11 of our textbook. Pick one of the following theories. Describe the basic tenets of that theory. Finally, compare the role that larger, social-structural conditions play ..
Smurfs are imaginary creatures who are normally blue (B), fuzzy (F), and industrious (I). Data from a testcross are shown below.
What is the generation time of a log phase culture of bacteria that had 10^3 organisms 4 hours into growth and 10^9 organisms 9 hours into growth?
Pleiotropy, and genetic heterogeneity can affect the severity of a disease in a family
You now grow Daphnia and Bosmina together. Suppose they remain limited by phytoplankton. What genetic basis of erminette pattern is suggested? How would you test your hypothesis.
Hamptonium is a radioactive substance that decays into two parts Monctonium and one part St. Johnite (i.e. 3 units of Hamptonium decays into 2 units of Monctonium and 1 unit of St. Johnite) .
What experiment could be performed to ascertain if an antimicrobial agent is bactericidal or bacteriostatic? Can a bacteriostatic agent become bactericidal in the long run or vice versa? Why?
q1. charlie has the blood test that shows a normal level of ldls other than an elevated level of hdls in his blood.
1. How does the structure of DNA (double helix) determine how the genetic information is passed on? 2. How does the cell use the information contained in the DNA to construct proteins (transcription and translation)?
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