In a conjugation experiment, the Hfr donor is thr+, leu+, his+, str. The recipient is thr–, leu–, his–, strS. Why would you use medium containing streptomycin to analyze your results?
What will be an ideal response?
to identify strR recipients
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If a cell's splicesomes were mutated so they no longer functioned normally, what consequences would result?
A. Introns would remain in the mature mRNA. B. Exons would be missing in the mature mRNA. C. Transcription would cease. D. A functional protein would still be produced. E. RNA processing would remain intact.
If a living plant cell is placed in a beaker with pure water, it will take up water until
a. within the cell ?P = ??S. b. it bursts. c. its ?P = 0. d. its ?S = ?S of the pure water. e. its ?S = 0.
Which of the following would NOT likely develop as an emerging virus?
A) a virus harmful to humans that changes very slowly over time B) A virus that is normally harmless to humans undergoes rapid mutations. C) a virus that begins to infect people in New York City, a popular tourist destination D) a virus that affects primarily rabbits mutates and infects humans
In autopolyploidy, a diploid individual may produce _____ offspring which are reproductively isolated from the parents' species
1.haploid 2.tetraploid 3.hybrid 4.allopatric 5.parapatric