Explain why the viral genome of the MS2 phage can be immediately translated. What type of genome must it have for this to be the case?
What will be an ideal response?
Answer: The MS2 phage has a positive ssRNA genome. Once the genome enters into the host cell, the host's RNA polymerase can directly bind to the mRNA transcript-like genome to translate the genome into proteins.
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A Punnett square is used to determine
(a) probable gamete genotypes. (b) possible parental phenotypes. (c) possible parental genotypes. (d) possible genetic outcomes of a cross.
The three main categories of energy-producing foods are ____
a. fats, carbohydrates and vitamins b. fats, vitamins and proteins c. fats, carbohydrates and proteins d. fats, carbohydrates and alcohol e. carbohydrates, vitamins and proteins
In genomic libraries:
a. naturally and arti?cially selected plants are genetically engineered. b. DNA fragments are stored in plasmids. c. a virus is used to transform human cells. d. none of the above are done.
Segments of DNA that contain instructions for making either proteins or RNA molecules that regulate proteins are called ________.
A. expressed factors B. chromatin C. traits D. genes