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1. Suppose you decide to discover a way to prevent the mosquito-dependent spread of the West Nile virus. You add a chemical to a small pool of water which contains many mosquito larvae as well as many larvae of a small, six-legged water bug. The mosquito and water bug larvae are easily distinguished because the water bug larvae have six legs like the adults. Throughout the 15 days after adding the chemical no adult mosquitos were seen. Many mosquito pupae, however, were visible in the water. During the 15 days of exposure to the chemical you noticed than only a few mosquito and water bug larvae died. To your surprise, at the 15th day almost all the water bug larvae had become bigger and were now adult six-legged water bugs. What might have been the effect on mosquitos of the chemical you added to the water?2. A gardener transplant two small, leafy, potted plants that were 6 inches tall and had green leaves and green stems. Both plants were transplanted to new pots the same size as the original pots. In one case, the new pot contained dry soil to which plenty of water was added. This soil ws the same as the soil in the original pot. The other plant, however, was transplanted to a pot containing a soil the solid material of which is fairly soluble in water, much more soluble in water than the soil in which the plant developed from a seed. After one day, the gardener noticed that the plant%u2019s leaves were wilting and that after two days the plant stem bent over so far the leaves were touching the soil. What happened to this plant? Why did it wilt so quickly?
Represent graphically the relation between melting temperature and the G-C content of DNA. Construct relations for dependence of melting temperature of a 30 bp DNA duplex on the G-C content.
Pathways that have an overall energy requirement are referred to as.
You are studying 2 wetlands in eastern Ohio - one that has become highly invaded by purple loosestrife. These wetlands typically contain over one hundred species.
Excessive alcohol consumption with increase the ratio of NADH/NAD+. This will directly inhibit which enzyme in the TCA cycle, A three year-old male presents to the emergency room with hypoglycemia
Unexpectedly, a missense mutation found in a protein-coding gene is no longer causing problems for the cell due to the presence of this mutant tRNA. Before the missense mutation in the protein-coding gene, what was the unique encoded amino acid.
What is one way you might get bacteria of part b growing again without changing the medium. What result could be predicted if you were to transfer the bacteria of part a to the medium containing only unsaturated fatty acids without making any other ..
The mean value of a trait is 250 units and the h2 for the trait is .50. A male and female measuring 240 and 280 units respectively are selected for breeding and they produce several offspring. Find expected value for the trait among their offspring.
Some sensory neurons in our bodies generate action potentials in response to pressure or movement, allowing us to feel things through our sense of touch.
Say you injected and x amount of protein onto SEC column and it produced certain peaks. Now say you repeated the experiment and use the same amount of protein.
Think about a population of owls. For simplification purposes let's say that an owl's flight can be loud or silent and is a function of classic Mendelian genetics.
Flask A includes yeast cells in glucose-minimal salts broth incubated at 30C with aeration. Flask B contains yeast cells in a glucose-minimal salt broth incubated at 30C in an anaerobic jar.
describe the processes and stages of human embryogenesis.What factors will disrupt this normal growth and cause problems?
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