In Drosophila virilis, somatic cell nuclei contain 12 chromosomes while sperm nuclei contain only 6 chromosomes. What does n equal for this species?
A) 3
B) 6
C) 12
D) 24
E) 6 or 12, depending on cell type
B) 6
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What gene(s) is/are encoded in the Xic?
A. Xce B. Xist C. Tsix D. Both the Tsix and Xist genes are in the Xic region
The most common mode for the transmission of Schistosoma haematobium is ________.
A. contaminated meat B. opportunism C. contaminated water D. fecal-oral route E. fomites
If it were possible to have antagonistic muscle pairs in an arm contract simultaneously, what movement would the arm make?
A) The arm would move away from the body. B) The arm would move toward the body in a curling movement. C) The arm would be locked in position. D) The arm could move easily in each direction.
What is one consequence of long-term exposure to carbon monoxide, found in environmental tobacco smoke?
A) damage to hemoglobin B) protection from bronchitis C) higher-than-average birth weights of babies born to smoking mothers D) diminished brain function in infants and children