18. Biotechnology
Introduction to DNA-Based Technology
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Practice this topic
- Multiple ChoiceThe expression of the Pax-6 gene when vertebrate and fruit fly versions of the gene are exchanged between these animal groups illustrates __________.1463views
- Multiple ChoiceIn recombinant DNA technology, the term vector refers to __________.2327views
- Multiple ChoiceAn enzyme that cuts DNA at a symmetrical sequence of bases is called __________.1768views
- Multiple ChoiceWhen a typical restriction enzyme cuts a DNA molecule, the cuts are staggered so that the DNA fragments have single-stranded ends. This is important in recombinant DNA work because __________.2289views2rank
- Textbook Question
Which of the following tools of DNA technology is incorrectly paired with its use?
a. Electrophoresis — Separation of DNA fragments
b. DNA ligase — Cutting DNA, creating sticky ends of restriction fragments
c. DNA polymerase — Polymerase chain reaction to amplify sections of DNA
d. Reverse transcriptase — Production of cDNA from mRNA
1172views - Textbook Question
'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.
968views - Textbook Question
Plants are more readily manipulated by genetic engineering than are animals because
a. 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.
2111views - Textbook QuestionToday, 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?1266views