An example of natural passive immunity would be
A. chickenpox infection, followed by lifelong immunity.
B. chickenpox vaccine triggering extended immunity to chickenpox.
C. giving a person immune serum globulins to chickenpox virus after exposure to the disease.
D. a fetus acquiring maternal IgG to the chickenpox virus across the placenta.
Answer: D
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The ____________________ of STR alleles reveals how often they are observed in a population
Fill in the blank(s) with correct word
Graduate students studying population genetics are assigned the task of determining the allele frequencies of gene Z in a population. After their study is completed, the graduate students report that the frequency of allele ZA is 67%, and the frequency of allele ZB is 23%. What conclusion can you draw from these results?
a. The studied population is in Hardy-Weinberg equilibrium. b. The sample size in this study was too small to produce accurate results. c. At least one more allele of gene Z exists in the studied population. d. The studied population is evolving toward a fully homozygous genotype.
Cnidarians are
A. aquatic animals. B. Both land-dwelling animals and aquatic animals are correct. C. land-dwelling animals. D. arboreal animals. E. Both land-dwelling animals and arboreal animals are correct.
Which of the following pairs is mismatched?
A) spirochete — axial filament B) aerobic, helical bacteria — gram-negative C) enterics — gram-negative D) mycobacteria — acid-fast E) Pseudomonas — gram-positive