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a) In a few sentences, describe how Darwin explained the abundance of marsupials in Australia that were ecologically equivalent to placental mammals elsewhere. Do NOT refer to any information that was learned after the publication of On the Origin of Species in 1859.
b) Tetras are a diverse group of tropical freshwater fish. A species found in caves lacks eyes. The eyeless species is believed to have evolved from an ancestor that had eyes. Explain how natural selection can account for the loss of eyes in cave tetras.
c) Prokaryotic microbes resembling bacteria are discovered on Mars. They they use the same genetic code to make proteins as bacteria on Earth. What is the most likely explanation for why the genetic codes are the same?
A man obtained 30 spotted and 10 solid-colored rabbits from a mating of two spotted rabits. From this information, what are the most likely genotypes of the two parents?
What alternative test can be used to confirm the diagnosis? What is the main principle of this alternative test?
Analyze your state or county/city health department's website (e.g., dhhs.gov). A Google search of your city's "health profile" may also yield results.
Describe the Lymphatic System. Name some tissues and organs that do not have lymphatic drainage. What is the role of lymphatics in spread of cancers? Explain
According to a 2012 United Nations report, nearly 870 million people, or about 12.5% of the people on earth, are suffering from chronic undernourishment,
Describe how the physical forces generated by waves and currents and/or the ebb and flow of tides, contribute to the physical characteristics of each of these habitats we will visit. Explain at least one challenge facing organisms in each of these..
Some varieties of Neisseria gonorrhoeae are now resistant to penicillin. These varieties of bacteria most probably developed
Name two benefits that a parasite derives from the host? How is mitochondria adapted to its function?
as both starch and cellulose are chemically identical chains of glucose, what is the structural difference between the two polysaccharides?
What are “rafts”? Compare and contrast the impact of the current catastrophic duststorm afflicting Australia, and toxin produced by a massive RedTide bloom very close to the coast of Florida.
Explain what happens to the flow of lymph as it passes through a lymph node and why this is important to the function of lymph.
An individual who is heterozygous for Eye color would be
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