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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?
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.
Results of this analysis show that one of the most rapidly reassociating classes of DNA is substantially reduced in the older individual with respect to the 2 year-old. How can you describe this finding.
Throughout pairing homologous regions associate with one another. As a result individual heterozygous for an inversion will form a structure known as an inversion loop. What is consequence of a crossover within this inverted region.
If a double heterozygous plant were crossed with a plant that has green stems and red fruit, what offspring phenotypes would be expected and in what proportions.
Determine volume of the sodium citrate in order to make up 7.5% solution. A solution needs 250 ml of a 7.5% (w/v) solution of the tri sodium citrate.
This is "new methylene blue" stained blood. What cell is stained? What are the "inclusion bodies" called in this case of thalassemia? Describe this slide (is it peripheral blood smear/bone marrow aspirate or biopsy, and is it normal/abnormal?).
State how the amonio acids sequence you obtained from the gene fragment for botana curus compares with the sequence for other three species.
What effect do you think EBV would have on B cell function. What phenotypes would you expect in the F2, and in what actual numbers (not ratios) will you expect to find out them.
How did Thomas Hunt Morgan"s experiments with eye colour in Drosophila show the existence of sexlinked genes.
At what stage of the cell cycle are the chromosomes satisfactorily condensed that they FIRST become visible under the light microscope.
You have been injected into the femoral vein? What is the path from the right femoral vein to the lower lobe of the right lung? What is the path that I would take from the right femorla vein to the lower lobe of the right lung via right pulmonary art..
If you were asked to create a karyotype from the chromosome spreads you made from HeLa cells in Activity 4.2.1, list materials you would use and explain how you would make the karyotype.
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