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1. For wheat stem rust in North America, we are worried about an invasion of the Ug99 lineage from Africa or Asia. The three major strategies for durable rust resistance are: 1) quantitative (minor) gene resistance, 2) combinations (pyramids) of qualitative (major) resistance genes, and 3) increasing the diversity of resistance through cultivar mixtures, regional gene deployment, etc. For each of these three strategies, explain exactly how they could slow or stop pathogen evolution. Think about probabilities of developing virulence and the relative fitness of any new variants. After your analysis of the strategies, what is your best recommendation to breeders in North America for how to protect our crop from exotic races of wheat stem rust? Why do you prefer that strategy?
2. Separately analyze the risk for pathogen evolution for rice blast and wheat blast. Identify the major risk factors involved for each system (e.g. pathogen evolutionary potential, resistance gene availability), noting any similarities and differences between the 2 pathosystems. Would you expect differences between the pathogen population structure in South America and South Asia? What are your recommendations on the best strategy to achieve durable resistance in rice and in wheat. Document actual experiments that must be performed, and/or any foundational knowledge that must be gained, in order for your strategy to succeed with each crop.
Name components of pancreatic juice which are essential in the proper functioning of the pancreas and which aids the pancreas in performing its functions.
1.What is the highest expense for business operations? How can managers monitor and keep this cost as low as possible? Explain. 2. What is the highest expense for business materials? How can managers monitor and keep this cost as low as possible? Exp..
Population Genetics. Given allele frequencies for a dominant trait of 0.6, with only a single recessive trait, what do you expect genotype frequencies at Hardy
Understanding the life cycles of parasites has helped the development of preventative measures against their routes of infection.
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Explain the role of transposable elements in eukaryotes and Explain the possible role of telomerase in cellular aging and in cancer formation
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A two year old boy is being seen through a hematologist. The child's symptoms include the sudden onset of high fevers, thrombocytopenia, epistaxis.
Describe the colony phenotypes of Staphylococcus saprophyticuspseudomonas aeruginosa and on the BAP. Be as detailed as possible.
Evan's friends have become increasingly concerned about his health these days. He has always been a very active and outgoing person, but these days, simple activities like mowing the lawn or taking out the trash tire Evan out. He dismisses the prob..
Which one of the following best illustrates a primaryreinforcer?
Briefly describe the path of food through the digestive system and explain each organ's role in the digestive process.
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