BIO 305 Final Exam Questions with 100% Verified
Answers Latest Update
Question: To create transgenic mice, DNA is injected into
Answer:
a pronucleus of zygote
Question: How can transgenic organisms be used to identify transcriptional enhancers?
Answer:
A reporter gene can be constructed so that its expression is controlled by an enhancer that
may potentially exist within a fragment of genomic DNA
Question: A trait unique to embryonic stem cells that makes them useful for generating
knockout animals is that they
Answer:
are totipotent
Question: after exposure to Agrobacterium tumefaciens bacteria containing both a
recombinant T-DNA vector and a helper plasmid, new plants can be grown from single cells
in the presence of herbicide. Without the herbicide,
Answer:
both transformed and nontransformed plants would grow
Question: A scientist wants to determine whether a mutant phenotype is due to the loss of
gene C or gene D, which are both deleted in a mutant fly with abnormal eyes. Mutant flies
with transgenic gene C have wild-type eyes, whereas mutant flies with transgenic gene D
have abnormal eyes. What can be concluded from these results?
Answer:
Gene C is required for normal eye development
Question: The Aniridia gene in humans is involved in eye formation. Although eye
development is very different in flies, this gene is highly conserved. What is the Drosophila
homolog of Aniridia?
Answer:
eyeless
Question: The presence of a homeodomain in a protein suggests what about its function?
Answer:
It is a transcription factor
Answers Latest Update
Question: To create transgenic mice, DNA is injected into
Answer:
a pronucleus of zygote
Question: How can transgenic organisms be used to identify transcriptional enhancers?
Answer:
A reporter gene can be constructed so that its expression is controlled by an enhancer that
may potentially exist within a fragment of genomic DNA
Question: A trait unique to embryonic stem cells that makes them useful for generating
knockout animals is that they
Answer:
are totipotent
Question: after exposure to Agrobacterium tumefaciens bacteria containing both a
recombinant T-DNA vector and a helper plasmid, new plants can be grown from single cells
in the presence of herbicide. Without the herbicide,
Answer:
both transformed and nontransformed plants would grow
Question: A scientist wants to determine whether a mutant phenotype is due to the loss of
gene C or gene D, which are both deleted in a mutant fly with abnormal eyes. Mutant flies
with transgenic gene C have wild-type eyes, whereas mutant flies with transgenic gene D
have abnormal eyes. What can be concluded from these results?
Answer:
Gene C is required for normal eye development
Question: The Aniridia gene in humans is involved in eye formation. Although eye
development is very different in flies, this gene is highly conserved. What is the Drosophila
homolog of Aniridia?
Answer:
eyeless
Question: The presence of a homeodomain in a protein suggests what about its function?
Answer:
It is a transcription factor
