Bio ch. 12 Practice Test
Terms in this set (50)
What is the preferred name of the technique used to determine if DNA comes from a particular individual?
Retroviruses such as HIV use ___ to convert information stored in their RNA to information stored in DNA
The feature of "sticky ends" that makes them especially useful in DNA recombination is their ability to
form hydrogen-bonded base pairs with complementary single-stranded stretches of DNA
In order for gene therapy to be permanent,
the normal gene must be transferred to somatic cells that can continuously multiply
Which step in this process requires use of restriction enzymes?
Genetic libraries can be constructed using either bacterial plasmids or what other vector?
Segments of eukaryotic DNA that can move or be copied from one site to another in the genome are called
The polymerase chain reaction relies upon unusual, heat-resistant ___ that were isolated from bacteria living in hot springs
DNA polymerase molecules
Which step in the creation of cDNA involves the use of reverse transcriptase?
In the process of human gene cloning using recombinant plasmids, the bacterial plasmid
functions as a vector
What is the smallest number of cells needed to perform a successful DNA profile
Approximately what percentage of the human genome is identical to that of a chimpanzee
A vaccine works by
stimulating the immune system
Golden rice is golden in color because it is in rich in
The ___ approach to gene cloning employs a mixture of fragments from the entire genome of an organism
The type of recombinant bacteria most often used to mass-produce genes is
A transgenic animal is
an animal containing a gene from a third "parent," which may even be another species
Which of the following has not been a significant issue in the creation of genetically modified (GM) organisms?
the fact that GM organisms cannot be modified to prevent them from reproducing once they pass beyond the experimental stage
If you commit a crime, you need to make sure that you do not leave even the smallest speck of blood, hair, or other organic matter from your body. If you do, the DNA in this material can be amplified by ___, subjected to genetic analysis, and used to identify you as the perpetrator of the crime
The only recombinant cells that can correctly attach sugars to proteins to form glycoprotein products are
The genetic variation of one nucleotide in at least 1% of the population is known as
single nucleotide polymorphism
has been around since the dawn of civilization
Restriction enzymes specifically recognize and cut short sequences of DNA called
Gene therapy can currently be considered
"Sticky ends" are
DNA fragments with single-stranded ends
The advantage of being able to clone the gene for human insulin is that
human insulin is less likely to provoke an allergic reaction than cow, pig, or horse insulin
DNA ligase binds
The number of proteins in humans
is much greater than the number of genes
Which of the following statements about genetics is false?
DNA technology limits genomic studies to prokaryotes
A cDNA library differs from a genomic library in that
cDNA libraries only contain information from active genes
Which of the following statements regarding genetically modified organisms is false?
Genetic modification of plants increases the amount of tillage and use of chemical insecticides
An advantage of using reverse transcriptase to prepare a gene for cloning is that
the resulting DNA strand will lack introns
Gel electrophoresis sorts DNA molecules on the basis of their
Which of the following statements regarding repetitive DNA is false?
Repetitive DNA is identical in all humans
In order to match the pilot's remains to the correct family using DNA profiling,
each of the 13 STR bands must match
A nucleic acid probe is
a piece of radioactively labeled DNA that is used to locate a specific gene
When plasmids are used to produce a desired protein,
the desired gene is inserted into the plasmid and the plasmid is returned to the bacterium by transformation
___ are a major source of restriction enzymes
Approximately what percentage of human DNA is noncoding
Which of the following pieces of evidence would be considered the best for establishing biological relatedness?
a very close match in the DNA profile
Which of the following statements about nucleic acid probes is false?
A nucleic acid probe is a double-stranded section of DNA
During the process of electrophoresis, the ___ functions like a thick filter,
Why is the whole-genome shotgun method currently the tool of choice for analyzing genomes?
It is fast and inexpensive
When DNA fingerprinting was first used,
the two semen samples did not match the person who initially confessed.
cut DNA at specific sites
When DNA from two sources is combined into one single piece of DNA, it is known as
Which of the following statements regarding DNA is false?
Scientists think that the typical human gene probably specifies just one polypeptide
DNA fragments that have matching sticky ends are joined by covalent bonds formed by the action of
Which of the following statements about genome sequencing is false?
Most of the genomes that have been sequenced to date are eukaryotes
Based on analysis of the STR sites shown, does the missing pilot belong to any of these three families?
Yes, family 3 matches