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A) The number of introns in a chromosome
B) PCRs
C) The genes responsible for producing the unique patterns of swirls and loops on a person's fingers
D) STRs
E) Plasmids
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A) Viruses that transfer DNA between host organisms
B) Sexual reproduction
C) Bacterial transformation
D) Bacteria that acquire foreign plasmids
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A) cancer- cell- killing hormones, which cure patients who have malignancies.
B) growth hormone, which helps children grow normally.
C) insulin, which treats diabetics.
D) clot- dissolving enzymes, which help heart attack victims recover.
E) blood- clotting enzymes, which treat hemophiliacs.
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A) Restriction enzyme and DNA ligase
B) Restriction enzyme and DNA polymerase
C) DNA polymerase and RNA polymerase
D) DNA polymerase and DNA ligase
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A) Genetic engineering can use genes from unrelated species, whereas selective breeding must use genes from the same or very closely related individuals.
B) Selective breeding can be done much more quickly than can genetic engineering.
C) Genetic engineering can alter the DNA sequence of entire populations, whereas selective breeding cannot.
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A) randomly cut DNA into small pieces.
B) can cut only bacterial DNA.
C) separate the strands of DNA during PCR.
D) produce single- stranded DNA fragments with "sticky ends."
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A) The DNA moves toward the negative electrode.
B) Larger pieces of DNA move at a faster rate.
C) DNA moves at a constant rate, regardless of fragment size.
D) Smaller pieces of DNA move faster toward the positive electrode.
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A) noncircular DNA segments found only in bacteria.
B) chromosomal loops made of RNA.
C) small, replicating rings of DNA found in bacteria.
D) found only in three species of bacteria.
E) necessary for bacteria to reproduce.
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A) The suspect may have been at the crime scene, because DNA fingerprinting has a large error rate.
B) The blood sample had to come from another person, but the suspect may still have been there.
C) The DNA in the blood sample probably degraded in a short period of time.
D) The suspect was never at the crime scene.
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A) PCR.
B) STRs.
C) restriction enzymes.
D) electrophoresis.
E) DNA probes.
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The researcher can m...View Answer
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Biotechnology is any genetic a...View Answer
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A) Wild animals might eat the transgenic crops and become genetically mutated.
B) The toxic products of the modified genes would be released to the environment when the plants die, resulting in drastic die- offs of local wildlife.
C) Eating transgenic foods will permanently change human DNA.
D) Pollen from transgenic crops could carry the recombinant genes to wild relatives, with unpredictable consequences.
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A) fewer than 50 years.
B) at least 10,000 years.
C) around 100 to 150 years.
D) about 1,000 years.
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A) Make recombinant viral and human DNA.
B) Encourage people not to consume pig products.
C) Develop a technique for STRs in swine.
D) Genetically engineer flu- resistant pigs.
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