Using the NeoR/Tk system of introducing gene replacements into mice (as described in the text), which of the following would identify those mouse cells that were the result of homologous recombination?
A. NeoR only
B. Tk only
C. NeoR and Tk
D. Neither NeoR or Tk
A
Biology & Microbiology
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For which of the following organisms is the sporophyte stage the dominant stage in the life cycle?
A. charophyte B. fern C. green alga Chlamydomonas D. moss E. liverwort
Biology & Microbiology
All the following are plant adaptations to low temperatures, except
A) shedding leaves at the onset of cold weather. B) production of antifreeze molecules. C) a shifting of Topt. D) increased photosynthetic rate to heat leaves.
Biology & Microbiology
Filtrate flows from the proximal convoluted tubule directly into the distal convoluted tubule. Indicate whether the statement is true or false
Biology & Microbiology
Which of the following is true regarding psychoactive drugs?
Biology & Microbiology