Which of the following strategies of sexual reproduction will result in the most genetic diversity?
A. Sexual reproduction of homothallic species
B. Sexual reproduction of heterothallic species
C. Sexual reproduction via arthroconidia
D. Sexual reproduction via sporangiospores
Answer: B
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The work of Reznick and Endler with guppies
shows all of the following EXCEPT that a. life history traits can be inherited. b. life history traits evolve. c. life history traits can be altered over a short period of time. d. predation does not influence the modification of life history traits. e. life history traits are coded for in DNA.
Many mosquito populations today are resistant to pesticides that were historically effective. This pesticide resistance arose in these populations because
a) the pesticides caused mutations in the DNA of mosquitoes that conferred resistance phenotypes, and these mutations were passed on to subsequent generations b) populations had to develop tolerance in order to survive c) individual mosquitoes build up immunity to the pesticides after exposure d) some individuals were resistant to the pesticides before they were used, and those mosquitoes were more likely to survive and reproduce e) these populations were outside the range of the original pesticide application
Figure 38.15
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Use the figure above to answer the following question.
What is the partial pressure of oxygen at the start of the systemic capillary beds?
A. 40 mm Hg B. 100 mm Hg C. 70 mm Hg D. 104 mm Hg E. 130 mm Hg
Which human body system would be best described as playing roles in both waste disposal and conservation?
A) urinary B) nervous C) respiratory D) lymphatic E) cardiovascular