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Genetics — Test Answers

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Which statement best explains why the process of genetic engineering is important to the scientific community?

A
Genetic engineering provides crops that are less expensive to grow.
B
Genetic engineering is a research tool that can advance the usefulness of recombinant DNA.
C
Genetic engineering can enhance the taste of food for consumers.
D
Genetic engineering provides an increased cost to laboratory work resulting in more advances.
23
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Which chromosomal change is represented?

A
inversion
B
deletion
C
translocation
D
insertion
24

Which best describes step 2?

A
Restriction enzymes cut the DNA into fragments; the fragments join with the host DNA to create recombinant DNA.
B
Cloning of the recombinant DNA occurs; the DNA is cloned in the biological vector to create more DNA for use in the host.
C
Recombinant DNA is inserted into a biological vector; the vector houses the recombinant DNA and can produce copies of DNA for itself and the recombinant DNA.
D
Recombinant DNA is inserted into a mechanical vector; the mechanical vector allows the DNA to be inserted into the DNA clone for use in the host.
25

Based on the current understanding of this operon, which hypothesis would be useful for James to test?

A
Removal of the RNA polymerase molecule should increase the amount of bacterial growth on the plate.
B
Increasing the rate at which RNA polymerase acts will inhibit bacterial growth.
C
Decreasing the amount of allolactose (inducer) in the bacterial growth media should increase the rate of bacterial growth.
D
Addition of allolactose (inducer) to the bacterial growth media should increase the speed at which the bacteria metabolize the sugar lactose.

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