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Genes that cause Prader-Willi syndrome and Angelman syndrome are closely linked along chromosome 15. Although people with these syndromes usually do not reproduce, suppose that a couple produces two children with Angelman syndrome. The oldest child, Pat, grows up and has two children with Prader-Willi syndrome. The second, Robin, grows up and has one child with Angelman syndrome.
a. Are Pat and Robin's parents both normal or does one of them have Angelman or Prader-Willi syndrome? If one of them has a disorder, explain why it is the mother or the father.
b. What are the sexes of Pat and Robin? Explain how you determined this.
for transformation of Synechocystis, why do you first plate your transformant mixture on a filter on a BG - 11 plate with glucose, and the next day the TA transfers the filter with cells to a plate that contains kanamycin (rather than plating dire..
Why do plant cells have mitochondria, but animal cells don't have chloroplasts? Give a phylogenic explanation.
Who does not readily enter blood capillary of the villi but must enter the lymphatic capillary of villus instead, amino acid, gluclose, calcium and copper or cholesterol and triglyceride?
In an experiment to look at length of cell cycle phases, cells were first treated with colchicine to arrest them at mitosis. What cytoskeletal element is inhibited by colchicine to cause this arrest?
An allele A undergoes mutation to the allele a at the rate of ten to five per generation. If a very large population is fixed for A, what is the expected frequency of A in the following generation?
a patient with hepatitis B has reduced liver function. How will reduced function of her liver affect levels of hormones in her blood or urine?
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Illustrate the metaphase cell of this culture showing predicted distribution of radioactivity on the autoradiograph.
A cross between a certain blue F2 plant and a certain white F2 plant gave progeny of which 3/8 were blue, 1/8 were pink, and 1/2 were white. What must the genotypes of these two F2 plants have been?
Explain why do plasma glucose concentrations start to decline after prolonged endurance exercise?
Many infected animals are induced by the parasitic microsporidians to develop huge cells, known as xenomas, which are full of spores. Given their large size, what must be true of the xenomas.
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