A ________ assay is most useful for determining the viability of a viral preparation.
A. PCR
B. plaque
C. hemagglutination
D. direct (electron microscopic) count
Answer: B
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If short hair (L) is dominant to long hair (l), then
what fraction of the offspring produced by a cross of Ll x ll will be homozygous dominant? a. 1/2 b. 1/4 c. 1/3 d. none (no chance of this offspring) e. none of these answers is correct
Before clotting factors from recombinant DNA became available, more than half of hemophiliacs in the U.S. acquired
HIV from injection of clotting factors obtained from donated blood. a. True b. False
The regulation of eukaryotic gene expression is ________, allowing a relatively small number of different DNA control elements and transcription
factors to establish highly specific and precisely controlled patterns of gene expression by acting in different combinations in different cell types. Fill in the blank with correct word.
Reproductive success of an individual is known as:
A. microevolution. B. macroevolution. C. adaptive makeup. D. variation. E. fitness.