quiz12 Flashcards


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1

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

2

Combining genes from different sources into a single DNA molecule is known as

DNA fingerprinting.

PCR.

recombinant DNA technology.

cloning.

C

3

DNA that contains genetic information from two different sources is ________ DNA.

recombinant

4

There are several methods of gene editing, including ________, the most widely used method.

sequencing

CRISPR

PCR

CLUSTER

B

5

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

6
  1. The use of DNA analysis to identify individuals is known as

DNA fingerprinting.

PCR testing.

cloning.

genetic modification.

A

7

Genetic engineering works only on animals and has not yet been successfully used on plants.

True False

False

8

Genetic engineering has been used to mass produce insulin for diabetics.

True False

true

9

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

10

Genetic engineering is a process in which specific sequences of ________ are deliberately isolated, modified, and inserted into a host organism.

DNA

11

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

12

Among these DNA fragments, which would move most quickly during gel electrophoresis?

AATAATAATAATAATAATAAT

AATAATAATAAT

AAATTAAT

AATAAT

d

13

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

14

Deliberately transferring a gene from one species to another is an example of

genetic engineering.

cloning.

the PCR.

constructing a gene library.

A

15

The use of genetic engineering has social, economic, and ecological implications.

True False

TRUE

16

Which organisms have been modified to produce insulin, blood clotting factor VIII, and human growth hormone?

corn

goats

bacteria

cows

C

17

Organisms that have had foreign genes inserted into them are called transgenic organisms.

True False

TRUE

18

Deliberately transferring a gene from one species to another is an example of

cloning.

genetic engineering.

constructing a gene library.

the PCR.

B

19

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

20

One function of gel electrophoresis is to

separate DNA fragments.

extract DNA.

recombine DNA.

cut DNA.

A

21

DNA from one organism will not bond to DNA from another organism.

True False

False

22

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

23

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

24

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

25

During recombinant DNA technology, which structure is used to cut the DNA at a specific site?

vector

DNA helicase

restriction enzyme

DNA ligase

c

26

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

27

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

28

The use of genetic engineering has social, economic, and ecological implications.

True False

true

29

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

30

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