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Imagine you have two pure-breeding lines of canaries, one with yellow feathers and the other with brown feathers. In crosses between these two strains, yellow female X brown male gives only brown sons and daughters, while brown female X yellow male gives only brown sons and yellow daughters. Propose a hypothesis to explain these results. (Please don't tell me that the brown trait is dominant to the yellow because that is not the correct answer. It has something to do with sex-linked traits.)
Frontal horns are trait because it is present in Arctic and Marsh unicorns an can be use to differentiate them from Flying Horse and Terrestrial Horse.
Upon completion of genome sequencing projects, how do scientists usually go about asking how many genes there are in genome and where they are located.
If the cell cannot recover from injury, the damage is irreversible and cell death is the result. Define, compare and contrast the 3 pathognomic signs of cell death.
Living diatoms contain brownish plastids. If global warming causes blooms of diatoms in the surface waters of Earth's oceans, how might this be harmful to the animals that build coral reefs?
Calculate g and k in a growth experiment in which a medium was inoculated with 4.7 x 104 E. coli cells, and following a 1-hour lag, grew exponentially for 5 hours, after which the population was 5.4 x 107 cells/ml.
Briefly describe how an F+ bacterium becomes an Hfr bacterium and what occurs in conjugation between the Hfr and an F- recipient bacterium.
Suppose that you are working with Drosophila and are studying genes, a, b, c, d, e, and f that are all linked in a region on a chromosome, but their order is unknown.
List and depict at least three prokaryotic cellular features that could be targeted in this way to inhibit or kill a bacterial pathogen.
Suppose You want to add PMA to 15mL of HL-60 cells so that you have a concentration of 5nM. Your stock solution is 1uM. What is the volume of the stock solution you require?
In England in the 1700s, Edward Jenner injected a child with a smallpox vaccine that had not yet been tested. After some time had passed, he injected the same child with a living smallpox virus. How do you think Jenner's experimental method differ..
Human population doesn't follow a j-shaped curve since humans are able to consciously limit the number of offspring that they produce, which is what usually happens after a population industrializes.
What is rabies? What animals carry it? What are ways to prevent it? What about the vaccine? Who should get it? answer should be about 200-300 words and should be written clearly.
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