Mules are a distinct species because they produce fertile offspring when mated.
a. true
b. false
b. false
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As a visitor to a country in which cholera is an endemic disease, what specific steps would you take to reduce your risk of cholera exposure? Will these precautions also prevent you from contracting other waterborne diseases? If so, which ones?
Identify waterborne diseases for which your precautions may not prevent infection. What will be an ideal response?
What color develops when orcinol reacts with starches in a sample?
a. Blue b. Blue-green c. Purple d. Red
Which of the experiments below would provide the best data set with which to test the hypothesis that female chimpanzees have a greater influence on the vertical transmission of culture than males?
A. Measure the amount of time that young chimps spend with each of their parents, and measure the rate at which they acquire cultural traits. B. Measure the amount of time young chimps spend with their mother only, and measure the rate at which they acquire cultural traits. C. Measure the amount of time young chimps spend with their father only, and measure the rate at which they acquire cultural traits. D. Train a wild chimp to use a new food source, and document how quickly this knowledge spreads to the rest of the population. E. Introduce a new food source to a population and see which chimps learn how to use it first.
The 5' and 3' designations used in reference to DNA and RNA sequences are assigned to the
A. oxygen atoms contained in the deoxyribose and ribose. B. hydrogen atoms that form hydrogen bonds between the nucleotides. C. nitrogen atoms in the nitrogen bases. D. carbon atoms in the nitrogen base purines and pyrimidines. E. carbon atoms of deoxyribose and ribose.