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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?
What percent of the population are homozygous dominant. What do you assume would be the effect on the switch of reversing orientation of one of the hix sites.
There is a common misconception that traditional taxonomy is according morphology, while cladistics is based on genetic data. How is this misconception incorrect?
In August 2001, a man walking his dog in Lindley Woods, near Otley, in West Yorkshire, discovered the body of 16-year old Leanne Tiernan, buried in a shallow grave.
Assume you leave a culture inthe 37 C incubator with out tryptophan for week instead of overnight like you planed. to your surprise culture has shown some visible growth so you reinoculate from that flask into a new flask
Hypothesis: since the normal substrate for the enzymes is lactose, adding lactose along with ONPG will reduce the rate of yellow color formation.
In humans, a dimple in the chin is a single gene, autosomal dominant characteristic. A man with the dimpled chin, whose mother lacked dimpled chin.
Determining Diffusivity of Solutes in a Liquid Compute the diffusion coefficient of a protein macromolecule bovine scrum albumin (BSA) at 23degreeC.
When chromatin from any eukaryote is digested with micrococcal nuclease and fractionated using electrophoresis, DNA fragments of approximately two hundred base pairs in length are observed.
Compare and contrast prokaryotic and eukaryotic cells. If shape and colour of radishes are both due to genes with partly dominant alleles, crossing two dihybrid heterozygotes will produce how many different phenotypes.
explain How will the net charge of a typical protein change.The table below indicates approximate values for these at 25C. For reference, the delta H(ionization) for Tris is 47kJ/mole.
Assume you identify five members of a multi-gene family that are expressed in the same tissues. All 5 genes appear to be equally expressed in all tissues.
Comb shape in chickens represents a classic example of gene interaction. 2-gene pairs interact to influence shape of the comb. The genes for rose com and pea comb together produce walnut comb.
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