A genetic trait that helps an organism survive and reproduce in its environment.
A) Ecosystem
B) Informed consent agreement
C) Epidemiologic studies
D) Critical thinking
E) Homeostasis
F) Metabolism
G) Placebo
H) Theory
I) Hypothesis
J) Adaptive trait
J) Adaptive trait
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What prion conformation may result in a prion-related infection?
A. PrPSc B. PrPC C. Both can cause disease
Researchers often work with temperature-sensitive mutations ________, because null alleles of these genes create mutants that cannot grow under any conditions.
A) that confer antibiotic resistance B) in essential genes C) that affect colony morphology D) that affect metabolism
Pedigrees are
a. used by geneticists to determine the sequence of an individual's genes. b. histories of families with regard to particular genetic traits. c. used only for dogs, cats, and horses. d. mutated alleles capable of causing genetic disorders. e. characteristics that are apparent in an individual.
What drug may protect against having a first heart attack?
A. ACE B. beta-blockers C. aspirin D. acetaminophen E. t-PA