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Q. 1. Why may you want to alter ACC deaminase levels in bacteria symbiotically associated with plant root hairs? Diagram the logic of why this may "improve" the bacterial strain.
2. How can the plant stress response be altered in a fashion to "improve" the plant? Give a specific example and explain the logic.
3. What is meant by phytoremediation? Describe an example of its possible use? What types of molecules must be produced to accomplish this?
4. Describe an application for over expression of siderophores as a mechanism of biocontrol of pathogens. Explain the logic.
5. How can bacterial strains producing antibiotics are used for biocontrol. Explain the logic of a specific instance.
6. How can altering ice nucleation protein production yield a bacterial strain useful to agriculture? Explain the logic and how this works.
What is the ultimate filter for which traits are maintained by natural selection?
a.How can you explain the occurrence of birth defects (caused by altered genes) in children and grandchildren of WWII atomic bomb victims, when the victims themselves were only mildly affected?
If the stock arabinose solution is 200 mg/ml, how much of the stock solution should be added to 10 ml of LB/amp agar for a concentration of 2 mg/ml arabinose?
Albinism is a rare genetically inherited trait that is only in phenotype of homozygous recessive individuals. The most characteristic symptom is a marked deficiency in the skin and hair pigment melanin.
Question: Assume you are working at a corporation that makes poly(ethylene terepthalate) in a batch-type processing. This process requires 2.7kg of ethylene glycol reacted with 9.6kg of terepthalic acid to make the polymer.
What is nondisjunction? In what type of reproductive cells in this most likely to happen? Name three chromosomal aberrations which can result fro this phenomenon.
A DNA polymerase made an error during the replication of an important gene region of DNA. None of the DNA repair enzymes detected or repaired the damage.
Explain how each of these ideas works and find ways to link between them. Present examples from your experience to demonstrate an understanding of the principles involved.
WHAT IS THE PURPOSE OF DOING A STRUCTURAL STAINS ONENDOSPORE, CAPSULE, ADN FLAGELLA, THE PURPOSE OF CARBOHYDRATE CATABOLISM, THE PURPOSE OF FERMENTATION
A 23 year old medical student has mixed venous oxygen and carbon dioxide tensions of 40 mmHg and 45 mmHg, respectively. A group of alveoli are not ventilated in this student because mucus blocks a local airway. What are the alveolar oxygen and car..
Consider two diallelic loci A (A1 and A2) and B (B1 and B2). The following haplotype frequencies are observed: A1B1 = 0.2, A2B2 = 0.45, A1B2 = 0.15, A2B1 =0.2. Calculate the extent of linkage disequilibrium (D abs).
What makes these cells different from somatic cells?
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