You've just had a near miss in your car. Your pulse is racing and you notice your pupils are wide open when you look in your rearview mirror. What part of your autonomic nervous system is activated?
A. peripheral
B. sympathetic
C. parasympathetic
D. myelencephalon
E. neocortex
B. sympathetic
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Calvin Bridges, an associate of Thomas Hunt Morgan's, found further evidence that genes were located on chromosomes. Which of the following is not a component of his study?
A. He crossed white-eyed females (XwXw) with red-eyed males (XWY). B. The F1 progeny were mostly the red-eyed males and white-eyed females expected. C. A few rare white-eyed females and red-eyed males were observed, which he called primary exceptionals. D. He proposed that the rare white-eyed females were the result of abnormal chromosome number. E. Abnormal chromosome number was a result of nondisjunction in the female fly.
What term describes a species with a disproportionately large effect on a community relative to its abundance?
a. pioneer b. indicator c. keystone d. exotic e. invasive
Approximately when did the earth's crust solidify?
A) 8 billion years ago B) 4 billion years ago C) 2 billion years ago D) 1 billion years ago
Sexual dimorphism is most often associated with what type of mating system?
A. Promiscuous B. Polygynous C. Monogamous D. Polyandrous