Which of the following statements is correct?
a. Meiosis involves two divisions and produces four nonidentical daughter nuclei.
b. Mitosis involves one division and produces two nonidentical daughter nuclei.
c. Mitosis involves two divisions and produces four identical daughter nuclei.
d. Meiosis involves one division and produces two nonidentical daughter nuclei.
A
Combining genes from different sources into a single DNA molecule is known as
DNA fingerprinting.
PCR.
recombinant DNA technology.
cloning.
C
DNA that contains genetic information from two different sources is ________ DNA.
recombinant
There are several methods of gene editing, including ________, the most widely used method.
sequencing
CRISPR
PCR
CLUSTER
B
The polymerase chain reaction (PCR) is used to
deliver DNA products into a human patient.
produce many copies of a selected DNA sequence.
screen for a particular gene.
insert DNA from one organism into a new host.
B
- The use of DNA analysis to identify individuals is known as
DNA fingerprinting.
PCR testing.
cloning.
genetic modification.
A
Genetic engineering works only on animals and has not yet been successfully used on plants.
True False
False
Genetic engineering has been used to mass produce insulin for diabetics.
True False
true
Which of the following is not an application of transgenic organisms?
corn plants that are resistant to herbicides
cattle that secrete therapeutic proteins into their milk
bacteria that undergo mutations frequently
bacteria that degrade oil
c
Genetic engineering is a process in which specific sequences of ________ are deliberately isolated, modified, and inserted into a host organism.
DNA
Giving rise to all the cell types that occur in the human body, ________ stem cells are obtained from the inner cell mass of a blastocyst.
embryonic
Among these DNA fragments, which would move most quickly during gel electrophoresis?
AATAATAATAATAATAATAAT
AATAATAATAAT
AAATTAAT
AATAAT
d
Which of the following is not an application of polymerase chain reaction?
linking two DNA molecules together
DNA fingerprinting of a crime scene suspect
making copies of a foreign gene for use in making recombinant DNA
production of many copies of an unknown piece of DNA
A
Deliberately transferring a gene from one species to another is an example of
genetic engineering.
cloning.
the PCR.
constructing a gene library.
A
The use of genetic engineering has social, economic, and ecological implications.
True False
TRUE
Which organisms have been modified to produce insulin, blood clotting factor VIII, and human growth hormone?
corn
goats
bacteria
cows
C
Organisms that have had foreign genes inserted into them are called transgenic organisms.
True False
TRUE
Deliberately transferring a gene from one species to another is an example of
cloning.
genetic engineering.
constructing a gene library.
the PCR.
B
Stem cells display two unique characteristics: the ability to ________ and ________.
A. express genes; synthesize proteins
B. produce vaccines; produce insulin
C. differentiate into a variety of cell types; divide repeatedly
D. cut DNA into smaller pieces; accept recombinant plasmids
C
One function of gel electrophoresis is to
separate DNA fragments.
extract DNA.
recombine DNA.
cut DNA.
A
DNA from one organism will not bond to DNA from another organism.
True False
False
Cells from the root of a carrot may be used to generate an entire carrot plant. This illustrates that
carrots may be used for therapeutic cloning.
only cells of the root contain the plant's genes.
plants are easier to clone than animals.
every cell of the root contains all of the plant's genes.
d
In order to study a gene, a scientist needs to make many copies of that gene using
DNA microarrays.
restriction enezyems.
the PCR.
gene therapy.
c
In reproductive cloning of mammals, if the egg cell is not enucleated before being fused to the donated somatic cell, the embryo will develop normally, but it will have two genetic parents.
True False
false
During recombinant DNA technology, which structure is used to cut the DNA at a specific site?
vector
DNA helicase
restriction enzyme
DNA ligase
c
Why do adult stem cells currently have fewer uses in therapeutic cloning than embryonic stem cells?
a Embryonic stem cells may become any type of cell, whereas adult stem cells may only become a limited number of cell types.
b Embryonic stem cells are capable of reverting to a G0 stage when starved.
c Adult stem cells may become any type of cell, whereas embryonic stem cells may only become adult stem cells first.
d Embryonic stem cells have longer telomeres and persist for much longer than adult stem cells.
A
Cloning is useful because it
repairs broken DNA.
mixes the DNA from two different organisms.
produces many copies of recombinant DNA.
determines the base sequence of a gene.
c
The use of genetic engineering has social, economic, and ecological implications.
True False
true
The study of comparative genomics has given researchers the ability to look at multiple genomes from different species, which has lead to new ideas about the evolutionary history of organisms. The conclusion is that
A modern vertebrate species all evolved from the same ancestral species, but they have changes so that their genomes are very different in modern times.
B neither the ancestral species nor the modern one resemble each other genetically.
C modern vertebrate species evolved from the same ancestors, and a large portion of their genome is conserved.
D modern vertebrate species all evolved from very different ancestral species, so there is little similarity between their genomes.
c
Bacteria, plants, and animals have all been used to create transgenic forms that are useful in
generating pharmaceuticals.
producing high-yield tomato plants.
creating pest-resistant versions of corn.
producing new types of high-yield beef.
A