Henry has the sickle-cell trait. Why might it be a bad idea for him to go on that hiking vacation that is being planned for the high Andes?
What will be an ideal response?
Sickling of the red blood cells can occur if the bearer of the gene travels to areas of high elevation with lower oxygen concentrations.
You might also like to view...
Recent research has shown that von Frisch was not completely correct about the difference between the round dance and waggle dance. The new information suggests that in honeybees, the _____
A) waggle dance communicates information about the quality of the food B) round dance communicates direction as well as distance C) waggle dance communicates the type of food D) round dance communicates the time of day the food will be available E) waggle dance communicates the favored food of the hive
Summarize the usefulness of the online catalog of human genetic traits developed and maintained by researchers at Johns Hopkins University
What will be an ideal response?
You are examining an ecosystem and notice a large bird. When you measure its temperature, you find it to be constant in sun or shade, wind or still air. This indicates the bird is a(n)
A. homotherm. B. ectotherm. C. endotherm. D. positherm. E. thermophile.
Suppose you've regressed profits on price, assuming a quadratic functional form. Your regression equation is: Profitsi = ?0 + ?1Pricei + ?2Pricei2 + Ui. What is the marginal effect of price in this equation?
A. ?1 + ?2 × Pricei B. ?0 + ?1 + ?2 C. ?0 + ?1 + 2?2 D. ?1 + 2?2 × Pricei