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Wild turkeys are dramatically sexually dimorphic; domesticated turkeys are less so. Suppose that wild female turkeys chose mates on the basis of expensive traits that indicate disease resistance and that artificial selection for rapid weight gain in domestic turkeys destroyed female choice.
Briefly describe the mechanism of selection in wild turkey populations. What would you predict about the evolution of disease resistance in domestic turkeys? If we observe that domestic turkeys are less resistant, does that necessarily mean that wild females had be choosing more-resistance males, or are other hypotheses equally plausible?
The loss of water during a hot day causes the blood volume to reduce and the osmolality of bodily fluids to increase. Discuss and explain how antidiuretic hormone can help to maintain homeostasis.
Which of the following enzymes is used in replication of the lagging DNA strand? A. RNA polymerase B. DNA polymerase C. DNA ligase D. A and B only E. A, B, and C
Most of the genome does not code for protein, therefore 99% of the human genome is junk that serves no purpose?. With specific reference to examples long and short non-coding RNAs discuss whether you agree with this statement. In your answer you shou..
Assume you are a graduate student and have been charged with the task to figure out how to differentiate a pluripotent cell into a pancreatic insuin making beta cell.
Under phosphate limiting conditions what will be the activation state (i.e. factors that make the enzyme active during the day) of RubisCO considering feedbacks from the light reactions of photosynthesis?
Assume you have a stock solution with a concentration of 722g/L. You want to make one liter of solution with a concentration of 39g/L.
Flooding after two weeks of heavy rainfall in Tooele, Utah preceded a high rate of diarrheal illness. Giardia lamblia was isolated from 25 percent of the patients.
What proportion of the interphase cells would you expect to exhibit labeled nuclei in autoradiographs prepared shortly after exposure to the labeled thymidine? (Assume a labeling period just long enough to allow the thymidine to get into the cells..
In examining a picture of the cell taken with an electron microscope, a student observes that the cell has a nucleus and a cell membrane but not a cell wall. The student can accurately conclude that the cell is a what.
Suppose that the field of view is at 400x total magnification is 0.26mm. Determine the height of onion cells pictured below from and image observed at 400x.
Describe the differences between cardiac, smooth, and striated muscles with special emphasize on cellular structure and motor protein quality.
Identify one of the regions of the skin and one of the accessory organs of the skin and explain the anatomy and physiology of each.
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