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Question: Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. If reinforcement of postzygotic isolation is occurring, what would you expect if you compare the calls of the two species in zones of sympatry versus zones of allopatry?A) Calls would be about the same in both areas.B) Calls would be more similar in areas of sympatry.C) Calls would be more different in areas of sympatry.D) There is not enough information to decide what is happening.
A cross between two pink snapdragon plants produces 46 Red snapdragons, 115 pink snapdragons, and 42 white snapdragons.
Explain an invasive species discovered within the United States. Include in your description where it is found, where it originated from, what impact it has on the environment.
Cyanobacteria grow prolifically in streams and lakes with low oxygen levels and high nutrient concentrations. How may the presence or absence of cyanobacteria be used as an index of pollution in lakes.
Miguel has congestive heart failure due to a valvular deficiency. He has edema in his ankles and hands. His liver is swollen, and he has accumulated fluid in his abdomen.
From each of the cell types select ONE structure from each cell that you think has a function that is affected by its location and describe why you think it is affected by its location.
How does the net amount of energy released during the breakdown of sucrose compare between spontaneous reactions and catalyzed by sucrase.
Explain why do positive inotropic agents help in the treatment of heart failure and also explain why are patients with chronic hypertension prone to developing heart failure?
theoretical genetic strains of a virus are used to simultaneously infect a culture of host bacteria. Of 10,000 plaques scored, the genotypes in the following table were observed.
Earlier in 2010, the Pacific island nation of Samoa decided to switch from driving on the right to driving on the left. Why may these cause difficulties? Why is it complicated for a cell to change codon usage, say, switching a "stop" codon to a trypt..
Suppose you are self making a hypothetical species. Can you suggest a type of genetic change that could have a drastic effect on the evolution of a species?
Both endocrine and nervous systems are major regulating systems of the body; though, nervous system has been compared to an airmail delivery system and endocrine system to the pony express. In brief explain this comparison.
Give examples of 2-different relationships that fungi have with other organisms. Indicate the type of relationship and explain why it was classified as such.
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