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Sickle-cell anemia is caused by a mutation in the ß-globin gene. Heterozygotes for the Hbs disease allele have some protection from malaria relative to wild-type, but Hbs homozygotes rarely live to produce offspring. 50 individuals homozygous for the normal (non-disease) allele produced a total of 47 children. 50 heterozygous individuals produced a total of 55 children. 50 Hbs homozygous individuals produced a total of 0 children. What is the average fitness per individual of the heterozygotes? What is the relative fitness of the homozygous normal individuals?
In what brain structure would you expect cocaine to have the largest effect on dopamine transmission and why.
Give a specific example of how amino acids create protein domains with particular properties important to the function of that protein.
Blood flow (liters per min.) through the pulmonary circuit equals blood flow through the systemic circuit, but pulmonary resistance to flow is 5 times less than the systemic resistance to flow so by using the mean arterial pressure equation, show ..
For a specific type of cells after 3 hours, the concentration of cells per milliliter of solution is about 400/mL. After 10 hours, the concentration has gone up to 2000/mL. Determine the initial concentration of cells.
Darwin understood how natural selection works in the presence of a population with many variant types. What does that variation consist of? How does the variation arise? How does it spread through the population?
In the Pacific Northwest the origin of some aquatic plant species remains a mystery (e.g., Nymphaea ordorata, Pontederia cordata, etc.) because they represent disjunct distributions.
Explain the Hershey-Chase experiment. Describe in your own words, as if you were talking to someone with no genetics background.
How is knowledge of DNA and technology being used today to do things that we could not have done 50 years ago? How does control of gene expression affect biotechnology? What is your personal experience with DNA technology?
Explain the processes of fatty acid oxidation and synthesis in animal tissues, pointing out their similarities and differences.
if an organism lacks the genetics to form even one enzyme in the Krebs cycle, what happens? or too much build uo, what would happen? How are these two situations different?
Indicate whether each statement is true or false. A. Fungal cells typically have haploid nuclei, except just prior to meiosis. B. Haploid nuclei from different fungal individuals (e.g., mom and dad equivalents) in some groups can coexist in the sa..
Write down an equation that describes the synthesis of DNA. dNTPs is an abbreviation for the four deoxyribonucleoside triphosphates that can be added to the template strand.
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