Broad-spectrum drugs that disrupt the body's normal flora often cause
A. nephrotoxicity.
B. superinfections.
C. drug toxicity.
D. allergic reactions.
E. All of these choices are correct.
Answer: B
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Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
What was the probability that Deirdre and Geoff's first child would express the albino trait?
A. 1/2 B. 3/4 C. 1/8 D. 1/4
Which statement about amoebas is false? a. Most amoebas are predators in freshwater habitats
b. Some amoebas live in the guts of animals. c. Amoebas live as single cells. d. No species of amoeba is pathogenic.
Which of the following statements is false?
a. Flowers are reproductive shoots. b. Trees are gametophytes. c. Sporophyte plants can reproduce asexually. d. Cells produced by mitosis are clones. e. Gametophytes are haploid.
Which scientist described inclusive fitness as the effect an individual has on propagating its alleles through its own reproduction and through kin selection?
A. Darwin B. Hamilton C. Mendel D. Tinbergen E. Wallace