In a population of 100 Douglas squirrels, the
birth rate is 10 per year and the death rate is 20
per year. The per capita growth rate of Douglas
squirrels is ___ per squirrel per year.
a. 0.2
b. 0.1
c. 0.0
d. -0.1
e. -0.2
D
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On a pedigree chart, what symbol would represent a son with a genetic disorder?
A. a clear circle B. a shaded circle C. a shaded square D. a clear square
During which phase of aerobic respiration is
FADH2 produced? a. glycolysis b. ethanol production c. acetyl-CoA formation d. the Krebs cycle e. glycolysis and the Krebs Cycle
What is the function of the structure that is labeled 7 in Figure 50-2?
a. maintaining sperm below body temperature
b. storage of mature sperm
c. production of prostaglandins
d. production of nutritive fluid to support active sperm
e. production of an alkaline fluid to protect sperm in the vagina
Which of these is a correct statement about the Irish Potato Famine?
A) Most of the potatoes in Ireland were propagated from cuttings of different plants. B) Potatoes did not become a key part of the Irish diet until well into the 20th century. C) The potato originated in Ireland. D) When the crops were infected by a rot-causing mold, all of the potato plants were susceptible and most were wiped out. E) Most of the potatoes in Ireland differed genetically.