The most common fatal genetic disorder of Caucasians is
A. sickle cell anemia.
B. muscular dystrophy.
C. cholera.
D. cystic fibrosis.
E. hemophilia.
Answer: D
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The life cycle of the human liver fluke has intermediate hosts.
(a) one. (b) two. (c) three. (d) four.
Many organisms have different reproductive strategies. Which of the following most accurately reflects altruistic
behavior? a. courtship rituals b. dominance hierarchy c. optimal foraging strategies d. adult care of related offspring e. territoriality
The two nitrogen atoms in nitrogen gas (N2) share six electrons forming a ________.
A. double bond B. single covalent bond C. hydrogen bond D. triple covalent bond E. double covalent bond
Stains for the demonstration of spirochetes are based on their property of:
a) argentophilia b) argyrophilia c) metachromasia d) acid fuchsin