AKS 8

Which of the following is not an example of a use of biotechnology?

• Growing a kidney in a lab for a transplant

• Injecting stem cells into an injury to speed up recovery

• Identifying the father of a child by comparing DNA

• Identifying the sex of a baby using sonogram

Some scientists hypothesize that genetically modifying salmon using recombinant DNA to increase their size and rate of growth can help meet human demands for protein. Which of these questions addresses the biggest ethical concern scientists should research before releasing the genetically modified salmon into the wild?

• Will genetically modified salmon have a less desirable taste than wild salmon?

• Will the genetically modified salmon introduce modified genes into the wild salmon population and what will be the impact on the ecosystem?

• Will the genetically modified salmon not grow as well in the wild as they do in inland facilities and how much money will be lost if this occurs?

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Will a child have the same DNA fingerprints as their parents?

• Yes, parents and children have the same genes.

• Yes, everyone has the same repeating nucleotide sequences.

• No, a child's DNA fingerprint is a combination of both parents' DNA fingerprints.

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Which is not a common use of DNA fingerprinting?

• to insert foreign genes into organisms

• to prove someone's innocence

• to identify a crime suspect

How can the length of a DNA fragment be estimated in gel electrophoresis?

• Larger fragments travel faster and farther than smaller fragments.

• Smaller fragments travel faster and farther than larger fragments.

• Larger fragments are more negatively charged so they travel farther.

Most bacteria do not have the ability to break down oil that is accidentally spilled into the ocean by tankers. However, scientists can insert a gene into the DNA of a bacterium to give it the ability to break down the oil. This technology is an example of

• Gel electrophoresis

• DNA replication

• Genetically modified organism

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Through what process can scientists artificially change the DNA code of organisms?

• gene pool

• gene shuffling

• genetic engineering

What technique is used when samples of DNA are cut with a restriction enzyme, stained, and then analyzed in a paternity clinic to determine if a family relationship exists between two people?

• Cloning

• Gel electrophoresis

• Gene splicing

Cystic fibrosis results when patients inherit two copies of a recessive CFTR gene. The recessive CFTR genes produce a protein which causes mucus to build up in parts of the body. Having just one dominant CFTR gene allows the body to produce a normal protein. Individuals with one dominant CFTR gene have no cystic fibrosis symptoms. Which question would BEST help researchers identify a potential treatment for cystic fibrosis?

• Can a dominant CFTR gene be inserted in patients cells using a virus?

• Can recessive CFTR genes recombine with bacterial DNA to be cloned?

• Can stem cells be used to change the recessive CFTR genes into dominant CFTR genes in patients cells?

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Scientists have inserted a gene that codes for resistance to a biodegradable weedkiller into a certain plant. Which of the following is the most likely benefit of the gene?

• plant will be able to produce chemicals to kill weeds around it.

• plant is more likely to survive when exposed to the weedkiller.

• plant is more likely to die when exposed to the weedkiller.

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