UIUC IB 104 FINAL EXAM 2024/2025
Understanding the structure of DNA has led to
which of the following?
A. development of crops resistant to weed-killers.
B. individualized treatment of many cancers.
C. treatment of otherwise fatal diseases like SCID
(severe combined immunodeficiency disease).
D. Both A and B
E. A, B and C - Precise Answer ✔✔E. A, B, and C
Non-coding DNA can be found:
A. in introns.
B. in exons.
C. between genes.
D. Both A and C.
E. Both B and C. - Precise Answer ✔✔E. Both B and C
Which researcher(s) is not matched with
their correct contribution to the
discovery of DNA
,A. Wilkins & Franklin; X-ray diffraction: DNA molecule
B. Miescher; DNA isolation
C. Avery, MacLeod, McCarty; Structure of DNA
D. Chargaff; A=T and C= G; Purine + Pyrimidine
E. None of the above - Precise Answer ✔✔C.
Which of the following is NOT true of the Genetic
code?
A. Triplet
B. Non-overlapping
C. Unique
D. Both A and B
E. None of the above - Precise Answer ✔✔C. Unique
Which of the following is true of the Translation?
A. Begins at random location
B. Copies DNA into mRNA
C. Occurs only on ribosomes
D. Both A and B
E. Both A and C - Precise Answer ✔✔C. Occurs only on ribosomes
How many chromosomes do you have in a cell
,before cell division in occurs in mitosis?
A. 23
B. 46
C. 92
D. None of the above - Precise Answer ✔✔A. 23
Meiosis results in:
A. Daughter cells with twice as much genetic material as the
parent cell and a unique collection of alleles
B. 8 daughter cells
C. Identical cells with the same number and composition of
chromosomes
D. Gametes
E. Genetically varied offspring - Precise Answer ✔✔D. Gametes
Nondisjunction:
A. Is the unequal division of the genetic material
during cell division
B. Occurs during meiosis but not mitosis
C. Occurs in males but not females
D. Leads to missing chromosomes or extra
chromosomes
E. Both A and D - Precise Answer ✔✔E. A and D
, All of the offspring of a black mouse and a white
mouse are gray. The simplest explanation for this
pattern of inheritance is:
A. Multiple alleles
B. Co-dominance
C. Incomplete dominance
D. Incomplete heterozygosity
E. Sex linkage - Precise Answer ✔✔C) incomplete dominance.
The Test Cross:
A. Makes it possible to determine the genotype of an individual of
unknown genotype that
exhibits the dominant trait
B. Is a cross between an individual whose genotype for a trait is not
known and an
individual homozygous recessive for the trait
C. Sometimes requires the production of multiple offspring to reveal the
genotype of an
individual whose genotype is unknown
D. All of the Above
E. Only A and B - Precise Answer ✔✔D. All of the above (you need
many offspring to ensure the cross was successful)
Understanding the structure of DNA has led to
which of the following?
A. development of crops resistant to weed-killers.
B. individualized treatment of many cancers.
C. treatment of otherwise fatal diseases like SCID
(severe combined immunodeficiency disease).
D. Both A and B
E. A, B and C - Precise Answer ✔✔E. A, B, and C
Non-coding DNA can be found:
A. in introns.
B. in exons.
C. between genes.
D. Both A and C.
E. Both B and C. - Precise Answer ✔✔E. Both B and C
Which researcher(s) is not matched with
their correct contribution to the
discovery of DNA
,A. Wilkins & Franklin; X-ray diffraction: DNA molecule
B. Miescher; DNA isolation
C. Avery, MacLeod, McCarty; Structure of DNA
D. Chargaff; A=T and C= G; Purine + Pyrimidine
E. None of the above - Precise Answer ✔✔C.
Which of the following is NOT true of the Genetic
code?
A. Triplet
B. Non-overlapping
C. Unique
D. Both A and B
E. None of the above - Precise Answer ✔✔C. Unique
Which of the following is true of the Translation?
A. Begins at random location
B. Copies DNA into mRNA
C. Occurs only on ribosomes
D. Both A and B
E. Both A and C - Precise Answer ✔✔C. Occurs only on ribosomes
How many chromosomes do you have in a cell
,before cell division in occurs in mitosis?
A. 23
B. 46
C. 92
D. None of the above - Precise Answer ✔✔A. 23
Meiosis results in:
A. Daughter cells with twice as much genetic material as the
parent cell and a unique collection of alleles
B. 8 daughter cells
C. Identical cells with the same number and composition of
chromosomes
D. Gametes
E. Genetically varied offspring - Precise Answer ✔✔D. Gametes
Nondisjunction:
A. Is the unequal division of the genetic material
during cell division
B. Occurs during meiosis but not mitosis
C. Occurs in males but not females
D. Leads to missing chromosomes or extra
chromosomes
E. Both A and D - Precise Answer ✔✔E. A and D
, All of the offspring of a black mouse and a white
mouse are gray. The simplest explanation for this
pattern of inheritance is:
A. Multiple alleles
B. Co-dominance
C. Incomplete dominance
D. Incomplete heterozygosity
E. Sex linkage - Precise Answer ✔✔C) incomplete dominance.
The Test Cross:
A. Makes it possible to determine the genotype of an individual of
unknown genotype that
exhibits the dominant trait
B. Is a cross between an individual whose genotype for a trait is not
known and an
individual homozygous recessive for the trait
C. Sometimes requires the production of multiple offspring to reveal the
genotype of an
individual whose genotype is unknown
D. All of the Above
E. Only A and B - Precise Answer ✔✔D. All of the above (you need
many offspring to ensure the cross was successful)
