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Chapter 13
Name
In order to determine the genotype of a particular
1 trait
of an organism, researchers can perform a
test cross between the unknown organism and
an organism that is known to be
.
A homozygous dominant for the trait
B heterozygous for the trait
C homozygous recessive for the trait
D a clone
2
How can foreign pieces of DNA be transferred
into organisms?
A by restriction enzymes
B by vectors
C by carrier enzymes
D by test crosses
Date
process is a common practice that has
5 Which
been used by farmers for hundreds of years to
develop new varieties of plants and animals?
A cloning
B genetic engineering
C cutting DNA and removing segments
D selective breeding for desirable traits
The diagram below shows some key steps of a
6 biotechnological
procedure. What
development does the letter X most likely
represent?
Enzymes
+
Gene for
human
insulin
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
3
The model below represents the outcome from
a step used in the recombinant DNA process.
What is the step called?
Class
Cut
bacterial
DNA
Inserted into
bacterial cell
Cell
division
X
A
B
C
D
human cells able to resist antibiotics
human cells unable to synthesize antibodies
bacterial cells able to synthesize human insulin
bacterial cells unable to synthesize human
insulin
The nucleus is removed from a body cell of one
7 organism
and is placed in an egg cell that has
A
B
C
D
DNA sequencing
gel electrophoresis
cloning genes
splicing genes
had its nucleus removed. This process results
in the production of organisms that are
genetically alike. What is this process called?
A fertilization
B adaptation
C cloning
D inbreeding
8 Restriction enzymes are used for what purpose?
Researchers inserted a gene for bioluminescence
4 into
a variety of organisms, such as mosquito
larvae. What is this technology called?
A gel electrophoresis
B polymerase chain reactions
C DNA sequencing
D genetic engineering
STANDARDIZED TEST PRACTICE
A to maintain homeostasis
B to transfer DNA fragments to plasmids
C to cleave DNA strands at specific nucleotide
sequences
D to inhibit enzyme reactions in cells
CHAPTER 13
25
Chapter 13
Name
was encapsulated in a virus like the one
9 DNA
shown below and supplied to a patient for the
purpose of replacing a defective gene. What is
this treatment called?
Date
Class
DNA fragment has been cleaved by
bm Arestriction
enzymes, as shown in the model
below. After this occurs, each single strand is
left with what feature?
GATAT C
C TATAG
A
B
C
D
sticky ends
blunt ends
spliced genes
a complete genome
are the small circular, double-stranded
bn What
DNA molecules in bacteria that can be used as
gene therapy
pharmacogenomics
gene splicing
replication
variety of strawberry is resistant to a
bk One
damaging fungus but produces small fruit.
Another strawberry variety produces large
fruit but is not resistant to the fungus. How
might the desirable qualities of the two
varieties be combined?
A cloning
B asexual reproduction
C direct harvesting
D selective breeding
has a gene that causes a visual disorder.
bl ATowoman
prevent the disorder from appearing in
future generations, where would the defective
gene have to be repaired?
A nervous system
B reproductive cells
C eye
D uterus
26
CHAPTER 13
vectors?
A clones
B plasmids
C chloroplasts
D transgenic organisms
can a polymerase chain reaction be
bo Why
compared to a biological copy machine?
A It makes a single, perfect copy of a DNA
sequence.
B It identifies a DNA sequence.
C It is used to make millions of copies of a specific
DNA molecule.
D It delivers gene therapy to all the cells of the
body.
Dolly is a sheep developed from an egg of her
bp mother
that had its nucleus replaced by a
nucleus from a body cell of her mother. What
resulted from using this technique?
A Dolly is no longer able to reproduce.
B Dolly is genetically identical to her mother.
C Dolly, or others like her, have a longer than
normal life span.
D Dolly is unable to mate.
STANDARDIZED TEST PRACTICE
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
A
B
C
D