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You cross a curved-wing (c), brown-eyed (b) fly with a wildtype fly, and obtain all wildtype F1 offspring. You next perform a testcross between an F1 fly and a curved-wing/brown-eye fly. What are the phenotype ratios of the offspring, assuming the genes are unlinked?
Discuss the difference between transformation and electroporationwhen? when do we use transformation and when do we use electroporation?
Discuss and explain why is it difficult to separate large amounts of RNA and DNA using gel electrophoresis?
In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+ thr+ and used to transduce a recipient of genotype cys- leu- thr-.
Describe the steps of the nitrogen cycle. How is nitrogen lost from ecosystems? How is it replaced? Why does it need to be "fixed?"
Gene frequencies for the ABO alleles vary geographically. For example the I^A allele makes up nearly 50 percent of the genes for blood type among Australian Aborigines, about 25 percent in Central Asian populations,
Practitioners of homeopathic medicine believe that toxic substances, appropriately diluted, can have healing effects, usually having the opposite effect of symptoms of the original toxic compound.
Discuss the differences and similarities between bacteria and fungi. Include a comparison of size, cell type, reproduction, mode of deriving food, and good versus bad effects on other organisms and the environment. Be sure to give specific example..
The gene for sickle-cell anemia exhibits heterozygote advantage. An individual who is an HB-A/HB-s heterozygote has increased resistance to malaria and therefore has greater fitness than the HB-A/HB-A homozygote, who is susceptivle to malaria, and..
Specify the three events in the human reproduction which contribute to genetic diversity
Ion concentrations have a impact on whether there is dissolution of minerals. Microorganisms can alter the charges on their cell surfaces to enhance these processes.
describe the pathway of blood flow into and out of the heart, naming blood vessels, heart chambers, valves, and where flow is to or from the lungs and to or from the rest of the body.
In an experimental situation, a student researcher inserts an mRNA molecule into the cytoplasm of a eukaryotic cell after she has removed its 5' cap and poly-A tail.
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