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In the experiment, we will establish microcosms to test the effect of illumination on relative abundance of our two ciliate phenotypes. You will use 3 beakers filled with water, and will inoculate these beakers with a mixed culture containing both phenotypes. Inoculation will involve adding a small volume of the culture to the beakers, permitting the ciliate population to grow in this new environment.You will determine the initial relative abundance of each of the two Paramecium species in the mixed culture. Do this by making a wet mount slide of the mixed culture and observing it under the microscope. Observe many fields of view and count the number of each species you see. Then use this to calculate the relative abundance (proportion of the total) for each species. Write your observations on the board at the front of the lab. Once everyone has completed this, you will calculate a class average relative abundance (based on all student observations).After inoculation, you will label your beakers. One will be incubated in the dark, one will be incubated under white light, and one will be incubated under green light. Periodically, the ciliates will be fed with a culture of bacteria.
He hopes this will slow the evolutionary development of BT resistant insects. Which seed variety must he use the 10 percent of his field that is not planted with BT 123 seeds.
The restriction enzyme Scs1 cuts at a restriction site that is found only very rarely in dog genomes. One dog, Jimmy, has two restriction sites for this restriction enzyme in his genome. Another dog, Billy, has three restriction sites for this enz..
If gametes from a gene pool combine randomly to make only a small number of zygotes, the allele frequencies among the zygotes may be different and discuss the founder effect
Hydrolases are one important class of enzyme that function to catalyze.
What component of root-tip cells is stained by Safranin in the permanent mount of a longitudinal section of a corn root tip? What component of root-tip cells does Fast Green stain? What could different stains such as these indicate with respect to ce..
Discuss how much energy do methanogenic bacteria get from using glucose and hydrogen to form methane and water as the products?
When digested DNA is analysed using agarose gel electrophoresis the total size of fragments sometimes does not add up to the size of the original DNA molecule. How can this be explained and how can this be seen in ethidium bromide stained agarose ..
Discuss and define late or delayed postpartal hemorrhage. What is the usual cause of this type of hemorrhage? List the symptoms.
Assume you use phase contrast microscopy to observe a wet mount of a soil sample and a goo sample. In what ways are potential ET microbes similar to microbes previously characterized on earth?
Roger Crocket, a sixty-eight year-old man with a 40-pack-year smoking history and recent complaints of angina upon exercising, collapsed while mowing his lawn.
Early in development, most human cells turn off expression of essential component of telomerase, enzyme responsible for addition of telomere repeat sequences to ends of chromosomes.
Illustrate the main types of faults and corresponding directions of stress. Differentiate between fault and joint. How does the stress differ between the two? Of what importance are these fractures to other geological processes.
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