Bacterial plasmids and artificial chromosomes are used as ________ to insert foreign DNA into host cells and create recombinant genomes.
A. subunits
B. endonucleases
C. vectors
D. clones
Answer: C
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Which of the following statements about bacteriophage is false?
A. Bacteriophages do not have a viral envelope. B. A temperate phage can have its DNA integrated into the host chromosome as a prophage. C. Ultraviolet radiation can cause induction. D. A prophage is replicated with the bacterial chromosome and passed to the two new daughter cells. E. Late genes are only expressed during the lysogenic cycle.
Rabbits were introduced to Australia in the 18th century. There were no other rabbits in Australia and there were no
natural predators for the rabbits. It is likely that their population experienced ____.
a. per capita birth rate b. logistic growth c. exponential growth d. sudden death e. density independence
The ability to roll the edges of the tongue upward in a U-shape is considered to be an inherited trait. The standard assumption is that tongue-rolling is a dominant allele at a single gene locus. Which of the following would cast doubt on this assumption? Select all that apply.A) A student who can roll his tongue has both a mother and father who cannot.B) In a large research study, the majority of tongue-rollers were male.C) A research study with 1,000 participants reports that most non-tongue-rollers can learn to roll their tongues.D) A student who cannot roll his tongue has both a mother and father who can.
What will be an ideal response?
Which is untrue about the nature of science?
A. It utilizes imagination B. There is no one scientific method C. It deals with unnatural patterns D. It utilizes logic