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A killer alga has invaded waters off California. In June 2004, biologists recognized a Caulerpa taxifolia mutant as an alien invader in San Diego area. This alga normally grows in warm waters of Caribbean Sea, however it can survive colder waters of the Pacific Coast, and if not controlled, could spread from the California south to Peru.
Where does this killer come from? As innocent as it seems, it was bred for home aquariums, and then was probably dumped into water system, where it began to regenerate prolifically. The alga is so adaptive that it may overtake normal flora of an area, outstripping and outcompeting all other living plants. Currently, 10 patches of the killer alga have been sighted off the California coast, and they are being watched closely by the Southern California Caulerpa Action Team.
The U.S government has placed this strain of C.taxifolia on noxious weed list, which means that any possible source of the contamination of the weed will be highly restricted. Shipments that contain any kind of C.taxifolia and pass through an area where variety is established, or thought to be established, will be refused entry. Whether you think this is really that big a deal?
Your doctor prescribes a drug that should be taken orally. You don't like swallowing big pills, so in the place you crush the pill into a fine powder, dissolve it in saline, and inject it into a vein in your arm. Why is this really bad idea.
Determine the percentage of offspring displaying each trait. If a single, diploid G2 nucleus in an ascus contains 400 nanograms (ng) of DNA, after that a single ascospore nucleus of this species should contain how much DNA (ng), carried on how many c..
Two linked genes, S and T, are separated by 8 cM. Peter, who has the genotype ST/st, marries Oliviam who is st/st. peter's father was ST/ST. what is the probability that peter and olivia's first child will be St/st? What is the possibility that their..
What would happen if one were to inject both the R strain and heat-killed S strains into a host organism such as the mouse.
What focal length must a pair of glasses have if they are to correct the vision of a person with a near point of 57.5 cm? The glasses are worn 1.8 cm from the eye.
Substrate-level phosphorylation occurs within the metabolic pathway where sufficient energy is released by given chemical reaction to drive the synthesis of ATP from ADP and phosphate. In which the metabolic pathways are substrate-level phosphorylati..
While discussing their findings, authors have ignored a main threat to the validity of their estimates of the exposure. Explain and discuss this error.
What is the significance of the chloroplasts structural feature that the thylakoid membrane is located between the stroma and the thyloakoid space.
Import or export of solutes (chemiosmotic work) turning the flagellar motor (mechanical work) Synthesizing ATP via the F0F1 ATPase (chemical work; discussed next lecture) how is this energy generated or replenished.
Complete a chart by identifying six actions that reduce the risk of infection and strengthen the body's immune system. In the second column, explain how the action reduces risk of infection and strengthens the body's immune system.
Acetylcholine acts at the G-protein-linked receptor on heart muscle to make the heart beat more slowly by the effect of the G protein on a K+ channel. Which one or more of next would enhance this effect of acetylcholine.
A cross of black chicken (BB) with the white chicken (WW) produces all speckled offspring (BBWW). This type of inheritance is known as what.
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