Exam 20: DNA Technology and Genetic Engineering

Each of the following is used in the process of DNA sequencing EXCEPT which one?

________ organisms are genetically modified or engineered to carry one or more foreign genes.

During PCR, the enzyme DNA ligase is added to the mixture to promote the addition of nucleotides to the growing DNA chain.

Vaccines produced by genetically engineered bacteria cannot cause disease they are modeled after.

A DNA sequence that can be read the same backward and forward is called a(n)

A scientist is working in a lab sequencing DNA. After reading the results from a column of gel scanned in a fluoroscope, she determines that the sequence of bases in the newly synthesized DNA is AATTCCCGG. Which one of the following represents the sequence of bases on the complementary strand?

Through genetic engineering, it is possible for scientists to identify the sequence of bases in DNA, determine the location of certain genes in DNA, and create more DNA from DNA samples.

Which one of the following human proteins, produced by transgenic bacteria, is used to prevent or break down blood clots?

One technique used to yield a transgenic animal is to

Genetic modifications have been used to increase plant leaf size for better photosynthesis.

Which one of the following genetically engineered vaccines is presently on the market?

Gene therapy is currently under investigation as a possible way to cure cystic fibrosis. How is the viral vector carrying the normal gene delivered to the affected cells?

Which one of the following enzymes catalyzes the attachment of nucleotides to a growing complementary strand?

During polymerase chain reaction, DNA amplification can come to an end

Plasmids are useful to scientists involved in recombinant DNA technology because DNA can be manipulated and inserted back into bacteria using them.