Name:     ID: 
 
Email: 

2

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
A carrier of a genetic disorder who does not show symptoms is most likely to be __________ to transmit it to offspring.
a.
homozygous for the trait and unable
b.
homozygous for the trait and able
c.
heterozygous for the trait and able
d.
heterozygous for the trait and unable
e.
None of the choices are correct.
 

 2. 
Many genetic disorders of humans are caused by
a.
drinking during pregnancy.
b.
recessive alleles.
c.
a mutation that occurs in the egg, sperm, or zygote that gives rise to the affected individual.
d.
multiple alleles.
e.
None of the choices are correct.
 

 3. 
The vast majority of people afflicted with recessive disorders are born to parents who were
a.
not affected at all by the disease.
b.
subjected to some environmental toxin that caused the disease in their children.
c.
slightly affected by the disease, showing some but not all of the symptoms.
d.
both affected by the disease.
e.
None of the choices are correct.
 

 4. 
Crossing over __________ genes into assortments of __________ not found in the parents.
a.
combines unlinked . . . alleles
b.
recombines linked . . . alleles
c.
combines  linked . . . genes
d.
recombines unlinked . . . genes
e.
recombines unlinked . . . chromosomes
 

 5. 
Which of the following is/are recessive sex-linked human conditions?
a.
red-green color blindness
b.
hemophilia
c.
muscular dystrophy
d.
All of the choices are correct.
e.
None of the choices are correct.
 

 6. 
Why are sex-linked conditions more common in men than in women?
a.
Women simply do not develop the disease regardless of their genetic composition.
b.
The sex chromosomes are more active in men than in women.
c.
Men acquire two copies of the defective gene during fertilization.
d.
Men need to inherit only one copy of the recessive allele for the condition to be fully expressed.
e.
None of the choices are correct.
 

 7. 
The monomers of DNA and RNA are
a.
nucleic acids.
b.
amino acids.
c.
nucleotides.
d.
monosaccharides.
e.
fatty acids.
 

 8. 
Which one of the following is false?
a.
DNA molecules have a sugar-phosphate backbone.
b.
DNA uses the sugar deoxyribose.
c.
DNA uses the nitrogenous base uracil.
d.
DNA is a nucleic acid.
e.
One DNA molecule can include four different nucleotides in its structure.
 

 9. 
DNA replication
a.
occurs by the addition of nucleotides to the end of the DNA molecule.
b.
uses each strand of a DNA molecule as a template for the creation of a new strand.
c.
produces two daughter DNA molecules that are complementary to each other.
d.
results in the formation of four new DNA strands.
e.
begins when two DNA molecules join together to exchange segments.
 

 10. 
If one strand of DNA is CGGTAC, the corresponding strand would be
a.
GCCTAG.
b.
GCCAUC.
c.
GCCATG.
d.
TAACGT.
e.
CGGTAC.
 

 11. 
The copying mechanism of DNA is most like
a.
using a photographic negative to make a positive image.
b.
threading beads onto a string.
c.
carving a figure out of wood.
d.
joining together links to make a chain.
e.
mixing flour, sugar, and water to make bread dough.
 

 12. 
When one DNA molecule is copied to make two DNA molecules, the new DNA contains
a.
75% of the parent DNA.
b.
50% of the parent DNA.
c.
none of the parent DNA.
d.
100% of the parent DNA.
e.
25% of the parent DNA.
 

 13. 
Which one of the following sequences best describes the flow of information when a gene directs the synthesis of a cellular component?
a.
DNA --> tRNA --> mRNA --> protein
b.
RNA --> DNA --> RNA --> protein
c.
protein -->RNA -->DNA
d.
DNA --> RNA --> protein
e.
DNA  --> amino acid --> RNA --> protein
 

 14. 
If you commit a crime, you need to make sure that you do not leave even the smallest speck of blood, hair, etc., from your body behind because if you do, the DNA in this material can be amplified by __________, subjected to genetic analysis, and used to identify you as the perpetrator of the crime.
a.
blotting
b.
PCR
c.
RFLP
d.
reverse transcriptase
e.
ATP
 

 15. 
The polymerase chain reaction relies upon unusual, heat-resistant __________ that were isolated from bacteria living in hot springs.
a.
mRNA
b.
phages
c.
plasmids
d.
restriction enzymes
e.
DNA polymerase molecules
 

 16. 
A change in the relative frequencies of alleles in the gene pool of a population is called
a.
diversifying selection.
b.
microevolution.
c.
genetic drift.
d.
directional selection.
e.
mutation.
 

 17. 
In the Hardy-Weinberg equation, homozygous dominant individuals in a population are represented by
a.
mc017-1.jpg.
b.
2pq.
c.
mc017-2.jpg.
d.
q or p.
e.
None of the choices are correct.
 

 18. 
Fitness increases when an organism
a.
lives for a long time.
b.
survives many hardships.
c.
is stronger than the other organisms in its community.
d.
passes on a greater proportion of its genes to the next generation.
e.
is disease-free.
 

 19. 
Cells with two sets of genetic information are described by the term
a.
polyploid.
b.
diploid.
c.
triploid.
d.
haploid.
e.
tetraploid.
 
 
Use the diagram to answer the following questions.

nar001-1.jpg
 

 20. 
The entire process represented here can be called:
a.
gene expression.
b.
gene regulation.
c.
DNA replication.
d.
DNA mutation.
e.
Transformation.
 

 21. 
This molecule is made of amino acids.
a.
1
b.
2
c.
3
d.
Both (1) and (2)
e.
Both (2) and (3)
 
 
Answer the following questions based on the diagram below:
nar002-1.jpg
 

 22. 
Chromatin is found in which stage?
a.
1
b.
2
c.
3
d.
4
e.
DNA is diffused into chromatin in all stages.
 
 
The next two questions refer to the following diagram.  1, 3, and 5 refer to the actual structure represented by the diagram.  2 and 4 refer to the event/stage represented by the arrow.

nar003-1.jpg
 

 23. 
Process (4) is:
a.
Interphase.
b.
Metaphase.
c.
Anaphase.
d.
Telophase.
e.
Meiosis.
 
 
Answer the following questions based on this graph and images:

The following graph was created using data collected through the “Natural Selection” done in class.  The “beans” used to simulate the prey population are diagramed below.

nar004-1.jpg
 

 24. 
Which of the following statements is false?
a.
Genetic diversity within the population is an important component of natural selection; genetic diversity in the “prey” population is represented by the different types of beans used.
b.
Darker color (black and brown) seems to be more of an adaptation in this simulation compared to smaller size (black and spotted).
c.
If this simulation is continued for 10 more generations, the resulting population will have less genetic diversity compared to the initial population.
d.
Genetic variation will not “recover” in this simulation because we cannot simulate random mutations and genetic recombination due to sexual reproduction.
e.
The black phenotype has the highest associated fitness.
 

 25. 
Which would be the most appropriate title for this graph (what is the data actually showing)?
a.
Change in phenotypic frequency in prey population due to natural selection.
b.
Change in allele frequency in prey population due to natural selection.
c.
Percentage of each phenotype remaining after each generation.
d.
Survival of the fittest due to natural selection.
e.
The Bean Lab.
 
 
The following four diagrams show the structures of different molecules.  Answer the following questions based on your ability to identify them.

nar005-1.jpg
 

 26. 
Which molecule, when broken down into its monomers, is consumed in the glycolysis pathway?
a.
1
b.
2
c.
3
d.
4
e.
Both (2) and (3)
 
 
Using diagrams below answer the following questions.
nar006-1.jpg
 

 27. 
Which of the above diagrams show an unsaturated fat?
a.
1, 4, 5, 6
b.
2, 3, 1
c.
1, 2, 6, 4
d.
5, 3, 1
e.
all of the above
 
 
Using the diagram answer the following questions.

nar007-1.jpg
 

 28. 
Which of the following terms best describes this molecule?
a.
fatty acid
b.
saturated fatty acid
c.
polypeptide
d.
phospholipid
e.
triglyceride
 

 29. 
Diploid organisms
a.
have corresponding alleles on homologous chromosomes.
b.
are usually the result of the fusion of two haploid gametes.
c.
have two sets of chromosomes.
d.
have pairs of homologous chromosomes.
e.
all of these
 

 30. 
If short hair (S) is dominant to long hair (s), animals SS and Ss have the same
a.
parents.
b.
genotypes.
c.
phenotypes.
d.
alleles.
e.
genes.
 



 
         Start Over