What is it about short tandem repeat DNA that makes it useful for DNA fingerprinting?
A) The sequence variation is acted upon differently by natural selection of different environments.
B) Every racial and ethnic group has inherited different short tandem repeats.
C) The number of repeats varies widely from person to person or animal to animal.
D) The sequence of DNA that is repeated varies significantly from individual to individual.
Which of the following characteristics, structures, or processes is common to both bacteria and viruses?
B) independent existence
C) cell division
E) genetic material composed of nucleic acid
For mapping studies of genomes, most of which were far along before 2000, the 3-stage method was often used. Which is the usual order in which the stages were performed, assuming some overlap of the three?
A) linkage map, physical map, sequencing of fragments
B) sequencing of entire genome, physical map, genetic map
C) genetic map, sequencing of fragments, physical map
D) physical map, linkage map, sequencing
E) cytogenic linkage, sequencing, physical map
5 Multiple Choice Questions
5 True/False Questions
If humans have 2,000 Mb, a specific member of the lily family has 120,000 Mb, and a yeast has 13 Mb, why can't this data allow us to order their evolutionary significance?
A) Size is comparable only within phyla.
B) Size does not compare to gene density.
C) Size matters less than gene density.
D) Size does not vary with gene complexity.
E) Size is mostly due to "junk" DNA. → D
What are prions?
A) viruses that invade bacteria
B) viral DNA that has had to attach itself to the host genome
C) tiny molecules of RNA that infect plants
D) misfolded versions of normal brain proteins
E) a mobile segment of DNA → D
Bacteria containing recombinant plasmids are often identified by which process?
A) producing antibodies specific for each bacterium containing a recombinant plasmid
B) using radioactive tracers to locate the plasmids
C) examining the cells with an electron microscope
D) exposing the bacteria to an antibiotic that kills cells lacking the resistant plasmid
E) removing the DNA of all cells in a culture to see which cells have plasmids → D
Why are viruses referred to as obligate parasites?
A) They must use enzymes encoded by the virus itself.
B) Viral DNA always inserts itself into host DNA.
C) They can incorporate nucleic acids from other viruses.
D) They cannot reproduce outside of a host cell.
E) They invariably kill any cell they infect → D
Which of the following is most closely identical to the formation of twins?
A) therapeutic cloning
B) use of adult stem cells
C) embryo transfer
D) cell cloning
E) organismal cloning → E