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Q1. A farmer decides to plant 90 percent of one field with BT 123 seeds and the remaining 10 percent of the field with a different seed variety. He hopes this will slow the evolutionary development of BT resistant insects. Which seed variety must he use the 10 percent of his field that is not planted with BT 123 seeds? Explain the answer.
Q2. An experiment was completed to determine the linkage relationship of three genes (a, b, and c) in Drosophila melanogaster.
Homozygous females phenotypically a, c were crossed with homozygous males phenotypically b. The F1 females were all wild-type in appearance and the F1 males were all a, c.
Provide the genotypes of the parents? Give genotypes of the F1 flies and demonstrate the genotypic arrangement in the female F1?
What will the results be for each plant if light only in the 650 nm range is supplied? 500 nm range? 450 nm range? Put in plain words.What colour is each plant? Give details.
Please describe how one might search for chemical structure, biologic function relationships, involving small molecular weight lipophylic compounds. Provide one example.
The patient lives near the San Luis Rey River and has no history of foreign travel, blood transfusion, or intravenous drug use. What is the disease? How was it obtained.
What organism produces the disease and how. Why is Anthrax such a potent weapon of bioterrorism? What are its characteristics that make it so.
Clarify the principle and advantage of using a rapid identification system. what is the probability that a son born to this woman would be phenotypically normal with respect to both of these traits.
While you measure the genotype frequencies of the population you get the following data. What will the frequency of Aa be in the next generation.
What is the possibility that - if they have a daughter - the daughter will be red-green colorblind. How several are born of each genotype.
Why is energy from fusion reactors, dissimilar that from fission reactors, so attractive from an environmental perspective. Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic.
What part of the sewage treatment plant deals with insoluble and complex organic wastes? Which molecule contains more energy, X or Y.
In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Illustrate a separate graph for each value of Vm.
Some wines are marketed as "sparkling" wines. Sparkling wines are considered so because of a dissolved gas that makes them fizzy. Concern what you know about the procedure of respiration to explain the type and origin of this gas.
Why is the gene coding for ribosomal RNA (rRNA) used for establish phylogenetic relationships and how does this compare to previous methods for placing organisms in appropriate taxa.
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