Which of the following viral components is
NOT typical of a plant virus?
a. RNA
b. protein coat
c. helical structure
d. viral envelope
e. more than one of these is NOT typical of a
plant virus
D
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How can microarrays differentiate between a wild-type allele and a disease allele that differ at only one nucleotide?
A) The DNA sequences of both alleles are determined. B) Oligonucleotides hybridize with the two alleles differently. C) Polymerase chain reaction primers amplify DNA from one allele, but not the other. D) Microarrays are not capable of detecting a difference between those alleles.
Mutation of the B group gene in Arabidopsis
thaliana affects development in its flower's a. first whorl only. b. second whorl only. c. third whorl only. d. first and second whorls. e. second and third whorls
Scabies is transmitted by
A) fomites. B) food. C) water. D) soil. E) respiratory secretions.
Which of the following leads to all the others?
A) toxemia B) scalded skin syndrome C) staphylococcal infection D) TSST-1 E) sudden drop in blood pressure