Predict the properties of viral populations in the human colon given that the colon contains a very high concentration of rapidly dividing bacteria. Predict as many viral properties as you can with this information
What will be an ideal response?
Answer: Viral populations in the human colon are most likely large populations dominated by head and tail lytic bacteriophages. Rapidly dividing bacterial populations tend to favor the survival and replication of more lytic phages whereas slowly dividing small populations favor lysogenic phages. Also, most bacteriophages have a head and tail morphology and lack an envelope.
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Characteristics that have arisen in organisms as a result of common evolutionary descent are said to be ______________ characteristics.
A. homologous B. homoplastic C. adaptive D. derived E. ancestral
In phage ?, the relative affinities of the lambda repressor and the cro protein to the three binding sites in the OR region are:
A. the same. B. inversely proportional C. unrelated.
Sea surface water moves in response to gravity
mostly from the a. north pole to the south pole. b. equator to the poles. c. poles to the equator. d. south pole to the north pole. e. poles to the equator and back again.
Which species is an invasive species?
A) pika in the western United States B) brown tree snake in Guam C) polar bear in Norway D) brown pelican off the coast of Louisiana