Different viruses have different properties that affect how the immune system responds to them and consequently how vaccines must be developed.What is a consequence of the fact that the chickenpox virus has a much lower mutation rate than the influenza virus?
A. Chickenpox virus can reemerge decades later with the symptoms of shingles, while influenza is transient.
B. A chickenpox infection generally gives immunity against a repeat infection, but people can catch the flu every year.
C. Chickenpox virus can "hide out" as latent virus in nerve cell bodies, but influenza cannot.
D. Chickenpox creates skin lesions, while influenza leads to body aches.
Answer: B
You might also like to view...
Which process used to solve problems in science involves accumulating facts through observation until the evidence leads to a general statement about nature?
A) deductive reasoning B) hypothesis C) inductive reasoning D) theory
Satellite DNA shows a high degree of variability because
a. it is subject to frequent unequal crossing over. b. it is noncoding so new mutations are not eliminated. c. it has a high probability of spontaneous mutation. d. there is positive selection for greater divergence. e. it is a target site for some mutagens.
An individual is unable to detect any chemicals. Which of the following would retain function?
1.free nerve endings 2.hair cells 3.taste receptors 4.olfactory receptors
In which condition are both alleles expressed in the heterozygous phenotype?
A) complete dominance B) codominance C) pleiotropy D) epistasis