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the drosophila allele (by) determines the mutant phenotype blistery wings and the wild type allele (by+) determines normal wings. At another gene, the allele (ss) determines the mutant phenotype spineless bristles and the wild type allele (ss+) determines spiny bristles. A female fly that is heterozygous for both genes is crossed with a male that has blistery wings and spineless bristles. Four different phenotypes are seen in the progeny, in the following numbers:
normal wings by+, spiny bristles ss+ 222by+, spineless bristles ss 23blistery wings by, ss+ 27by, ss 228
a. estimate the distance in centiMorgans between these genes
b. write out genotypes of each parent and each of the 4 offsprings. notation of genotypes should indicate which alleles share the same chromosome. for each offspring indicate whether it arose from a parental gamete or a recombinant gamete.
c. is the female parent in coupling or repulsion phase.
Describe how body combats an invading bactrum. Address both specific and nonspecific immunity and the cells that are involved in each process. Once that is done cross the alveolar membrane and trace your route out of the body through the nose.
Your friend is trying to generate an in vitro system for studying the formation of COPII vesicles. He finds that to get well-organized vesicle budding from artificial membranes, he needs to add the coat proteins, the Sar1 GTP-binding protein.
Use the data provided below compute the resting membrane potential of this set of cells. Is the inside negative or positive relative to the outside ?
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You have 100 ml each of 50 mg/ml human chorionic gonadotropin, 25x HCG buffer, and 400 mM potassium chloride. You want to make one liter of a solution that is 1 mg/ml human chorionic gonadotropin, 1x HCG buffer, and 40 mM potassium chloride How mu..
Discuss how do fossils provide evidence for the theory of continental drift and explain how do fossils help scientists piece together the family tree of a given plant or animal?
Hershey and Chase experimented with radioactively labeled phosphorus and sulfur to determine that DNA and not protein is the genetic material.
All known human cancers have been demonstrated to be caused by viruses, You have been asked to design a virus that causes cancer in humans. Which of the following cellular functions would this virus have to possess to cause a tumor (select all that..
Sketch another graph showing the response to selection if the heritability, h2, of pesticide resistance is 0.8. Illustrate an experiment that you could use to measure how this population of beetles responds to the selection that occurs when the popul..
Make a diagram of a cell (2n=10) at mitotic metaphase. Demonstrate the cell membrane, the spindle, and each of the Chromosomes as they are aligned on the metaphase plate
What focal length must a pair of glasses have if they are to correct the vision of a person with a near point of 57.5 cm? The glasses are worn 1.8 cm from the eye.
A wild-type trihybrid soybean plant is crossed to a pure-breeding soybean plant with the recessive phenotypes pale leaf l, oval seed, and short height Compute the recombination fraction between T and L pair of genes.
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