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Q1. Several people habitually use barbiturates to depress feelings of anxiety. Barbiturates cause hypoventilation that is the slower-thannormal rate of breathing, since they suppress the respiratory centers in the brain. What happens to the red blood count of a habitual user of barbiturates? Explain in details.

Q2. A paleontologist has recovered a bit or organic material from the 400-year-old preserved skin of an extinct dodo. She would like to evaluate DNA from the sample with DNA from living birds. Which would be most useful for increasing the amount of DNA available for testing?

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