BIOL 1301 final exam(part 3)
A provirus forms when viral genetic information is incorporated into a host cell
chromosome and the viral mRNA may not be immediately expressed.
Select one:
True
False - ANS-True
Hemophilia is an X-linked recessive disorder. If an affected female and an unaffected
male have a boy, what is the chance he will have hemophilia?
a. 3/4
b. 1
c. 1/4
d. 1/2
e. 0 - ANS-b. 1
Nondisjunction is caused by an error during separation of chromosomes during meiosis.
Select one:
True
False - ANS-True
Exam this tulip and indicate the reason for its unusual, striped appearance.
a. It demonstrates incomplete dominance
b. It is due to a prion infection
c.It is due to a viral infection
d. It represents a mutation
e. It demonstrates codominant inheritance. - ANS-c.It is due to a viral infection
Using the product rule, determine the probability that offspring from the following cross
are completely heterozygous for the indicated genes. DdTtPpRr X DdTtPpRr
a. 1/64
b. 1/2
c. 1/8
d. 1/4
e. 1/16 - ANS-e. 1/16
During HIV replication, ____________ copies ssRNA into dsDNA.
a. RNA polymerase
b. HIV integrase
, c. reverse transcriptase
d. HIV protease - ANS-c. reverse transcriptase
(Select all that apply) The uses of DNA technology include
a. DNA profiling
b. genetic engineering of agricultural plants for a higher crop yield
c. production of human pharmaceutical products from bacteria
d. animal cloning - ANS-a, b, c, d
A primary spermatocyte undergoes meiosis and produces 2 sperm cells with N+1
chromosomes and 2 sperm cells with N-1 chromosomes. This is the result of
____________.
a. inversion
b. non-disjunction during meiosis I
c. trisomy
d. translocation
e. non-disjunction during meiosis II - ANS-b. non-disjunction during meiosis I
The primary light-absorbing pigment molecules in leaves are called_____.
a. Chlorophylls
b. Carotenoids
c. Luteins
d. Xanthophylls - ANS-a. Chlorophylls
The strands that make up DNA are antiparallel. This means that ________________.
a. the 5´-to-3´ direction of one strand is counter to the 5´-to-3´ direction of the other
strand
b. the base pairings create unequal spacing between the two DNA strands
c. one strand is positively charged, and the other is negatively charged
d. purines bond with purines and pyrimidines bond with pyrimidines
e. the twisting of the DNA molecule has shifted the two strands - ANS-a. the 5´-to-3´
direction of one strand is counter to the 5´-to-3´ direction of the other strand
Use of adult stem cells have less ethical concerns than the use of embryonic stem cells.
a. False
b. True - ANS-b. True
Human life begins with a zygote because
a. it consists of atoms, molecules, macromolecules and organelles
b. it uses DNA as its genetic information
A provirus forms when viral genetic information is incorporated into a host cell
chromosome and the viral mRNA may not be immediately expressed.
Select one:
True
False - ANS-True
Hemophilia is an X-linked recessive disorder. If an affected female and an unaffected
male have a boy, what is the chance he will have hemophilia?
a. 3/4
b. 1
c. 1/4
d. 1/2
e. 0 - ANS-b. 1
Nondisjunction is caused by an error during separation of chromosomes during meiosis.
Select one:
True
False - ANS-True
Exam this tulip and indicate the reason for its unusual, striped appearance.
a. It demonstrates incomplete dominance
b. It is due to a prion infection
c.It is due to a viral infection
d. It represents a mutation
e. It demonstrates codominant inheritance. - ANS-c.It is due to a viral infection
Using the product rule, determine the probability that offspring from the following cross
are completely heterozygous for the indicated genes. DdTtPpRr X DdTtPpRr
a. 1/64
b. 1/2
c. 1/8
d. 1/4
e. 1/16 - ANS-e. 1/16
During HIV replication, ____________ copies ssRNA into dsDNA.
a. RNA polymerase
b. HIV integrase
, c. reverse transcriptase
d. HIV protease - ANS-c. reverse transcriptase
(Select all that apply) The uses of DNA technology include
a. DNA profiling
b. genetic engineering of agricultural plants for a higher crop yield
c. production of human pharmaceutical products from bacteria
d. animal cloning - ANS-a, b, c, d
A primary spermatocyte undergoes meiosis and produces 2 sperm cells with N+1
chromosomes and 2 sperm cells with N-1 chromosomes. This is the result of
____________.
a. inversion
b. non-disjunction during meiosis I
c. trisomy
d. translocation
e. non-disjunction during meiosis II - ANS-b. non-disjunction during meiosis I
The primary light-absorbing pigment molecules in leaves are called_____.
a. Chlorophylls
b. Carotenoids
c. Luteins
d. Xanthophylls - ANS-a. Chlorophylls
The strands that make up DNA are antiparallel. This means that ________________.
a. the 5´-to-3´ direction of one strand is counter to the 5´-to-3´ direction of the other
strand
b. the base pairings create unequal spacing between the two DNA strands
c. one strand is positively charged, and the other is negatively charged
d. purines bond with purines and pyrimidines bond with pyrimidines
e. the twisting of the DNA molecule has shifted the two strands - ANS-a. the 5´-to-3´
direction of one strand is counter to the 5´-to-3´ direction of the other strand
Use of adult stem cells have less ethical concerns than the use of embryonic stem cells.
a. False
b. True - ANS-b. True
Human life begins with a zygote because
a. it consists of atoms, molecules, macromolecules and organelles
b. it uses DNA as its genetic information
