BIOD 210 GENETICS MODULE 2 EXAM QUESTIONS
AND ANSWERS TESTED AND APPROVED NEWLY
MODIFIED 2025/2026
Who discovered double helix DNA structure?
Watson and Crick
True or False: Avery, MacLeod, and McCarty showed that DNA was
responsible for carrying genetic material in bacteria.
true
True or False: A mutation within a gene always results in the loss of that gene.
False.
Genetic mutations result in different alleles, resulting in a different version of
the "normal" gene.
Humans have a haploid number of:
23
Page 1 of 36
,Humans have a diploid number of
46
Why is it important to choose an animal research model carefully?
- Substantial investment of time and money in research
- Animals for genetic research are chosen for a short life span, ease of breeding,
low expense, and the ability to study them easily.
Who introduced cell theory?
Mathias Schledein
Theodor Schwann
What did Mathias and Schledein propose?
That all living organisms were composed of organized structures called cells
and that these cells were derived from identical precursor cells
Who theorized natural selection?
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,Charles Darwin
Who used pea plants to model how traits are inherited from generation to
generation>
Gregor Mendel
What does Mendel's experiment explain?
Basic foundations of trait transmission
True or False:
All genetic disorders will show a phenotype early in life, if not at birth.
False.
Some genetic disorders manifest later in life.
The module discusses how the domestication of dogs from wolves may have
gradually taken place. For instance, friendly wolves approached humans for
food and companionship, and the humans realized that they enjoyed the wolves'
company and could use them in their hunting and gathering. Can you think of
Page 3 of 36
, another example of an evolutionary process that occurred that would have given
humans a distinct advantage?
- Humans becoming bipedal so they are upright and have a better view in order
to avoid predators
Early theories proposed that the fertilized egg contained a tiny human in a form
called the __________.
Homunculus
Where were restriction enzymes first discovered? How are they useful in
genetics research and biotechnology?
- Discovered within bacteria cutting and inactivating the DNA of invading
viruses
- Useful in research to cut/fragment DNA in order to isolate genes
Epigenesis
The concept that a fertilized egg undergoes developmental events that lead to
the formation of a human.
Page 4 of 36
AND ANSWERS TESTED AND APPROVED NEWLY
MODIFIED 2025/2026
Who discovered double helix DNA structure?
Watson and Crick
True or False: Avery, MacLeod, and McCarty showed that DNA was
responsible for carrying genetic material in bacteria.
true
True or False: A mutation within a gene always results in the loss of that gene.
False.
Genetic mutations result in different alleles, resulting in a different version of
the "normal" gene.
Humans have a haploid number of:
23
Page 1 of 36
,Humans have a diploid number of
46
Why is it important to choose an animal research model carefully?
- Substantial investment of time and money in research
- Animals for genetic research are chosen for a short life span, ease of breeding,
low expense, and the ability to study them easily.
Who introduced cell theory?
Mathias Schledein
Theodor Schwann
What did Mathias and Schledein propose?
That all living organisms were composed of organized structures called cells
and that these cells were derived from identical precursor cells
Who theorized natural selection?
Page 2 of 36
,Charles Darwin
Who used pea plants to model how traits are inherited from generation to
generation>
Gregor Mendel
What does Mendel's experiment explain?
Basic foundations of trait transmission
True or False:
All genetic disorders will show a phenotype early in life, if not at birth.
False.
Some genetic disorders manifest later in life.
The module discusses how the domestication of dogs from wolves may have
gradually taken place. For instance, friendly wolves approached humans for
food and companionship, and the humans realized that they enjoyed the wolves'
company and could use them in their hunting and gathering. Can you think of
Page 3 of 36
, another example of an evolutionary process that occurred that would have given
humans a distinct advantage?
- Humans becoming bipedal so they are upright and have a better view in order
to avoid predators
Early theories proposed that the fertilized egg contained a tiny human in a form
called the __________.
Homunculus
Where were restriction enzymes first discovered? How are they useful in
genetics research and biotechnology?
- Discovered within bacteria cutting and inactivating the DNA of invading
viruses
- Useful in research to cut/fragment DNA in order to isolate genes
Epigenesis
The concept that a fertilized egg undergoes developmental events that lead to
the formation of a human.
Page 4 of 36
