Which of the following tools of DNA technology is incorrectly paired with its use?a. electrophoresis—separation of DNA fragmentsb. DNA ligase—cutting DNA, creating sticky ends of restriction fragmentsc. DNA polymerase—polymerase chain reaction to amplify sections of DNAd. reverse transcriptase—production of cDNA from mRNA

Transgenic organisms can be scientifically or commercially useful only if __________.

Transgene escape would occur if __________.

What does the "Bt" in Bt maize refer to?

Which of the following can be done by using biotechnology but cannot be done using traditional agricultural breeding practices?

'Bt maize'a. is resistant to various herbicides, making it practical to weed rice fields with those herbicides.b. contains transgenes that increase vitamin A content.c. includes bacterial genes that produce a toxin that reduces damage from insect pests.d. is a 'boron (B)-tolerant' transgenic variety of maize.

Plants are more readily manipulated by genetic engineering than are animals becausea. plant genes do not contain introns.b. more vectors are available for transferring recombinant DNA into plant cells.c. a somatic plant cell can often give rise to a complete plant.d. plant cells have larger nuclei.

Today, it is fairly easy to make transgenic plants and animals. What are some important safety and ethical issues raised by this use of recombinant DNA technology? What are some of the possible dangers of introducing genetically engineered organisms into the environment? What are some reasons for and against leaving decisions in these areas to scientists? To business owners and executives? What are some reasons for and against more public involvement? How might these decisions affect you? How do you think these decisions should be made?

Contrast technology with science. Give an example of each to illustrate the difference.