Genetics Final Exam Practice COMPLETE QUESTIONS & ANSWERS
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Genetics
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Genetics
Genetics Final Exam Practice COMPLETE QUESTIONS & ANSWERSGenetics Final Exam Practice COMPLETE QUESTIONS & ANSWERSGenetics Final Exam Practice COMPLETE QUESTIONS & ANSWERSGenetics Final Exam Practice COMPLETE QUESTIONS & ANSWERSHeat can be used to separate two strands of double-stranded DNA, with t...
heat can be used to separate two strands of double
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Genetics Final
Exam Practice
COMPLETE
QUESTIONS &
ANSWERS
,Heat can be used to separate two strands of double-stranded DNA, with the least
amount of heat necessary to separate strands with the fewest and weakest
bonds holding them together. Consider the following double-stranded DNA
sequences that each consist of 10 bp. Which sequence will likely require the
least amount of heat for separation?
(A) CGTGCCATTG
GCACGGTAAC
(B) GCCTCTAGGC
CGGAGATCCG
(C) AATGCTTATA
TTACGAATAT
(D) GCTATACTAG
CGATATGATC - ANSWER (C) AATGCTTATA
TTACGAATAT
Which of the following scientists is credited with the discovery of transposable
elements (TE)?
(a) James Watson
(b) Rosalind Frankin
(c) Erwin Chargaff
(d) Barbara McClintock
(e) Francis Crick - ANSWER (d) Barbara McClintock
The Ames test is used to determine
(a) whether a substance is a mutagen
,(b) whether a substance is a nucleic acid
(c) whether a substance contains amino acids
(d) whether a substance is a polypeptide - ANSWER (a) whether a substance is a mutagen
In eukaryotes, which of the following is a role for RNA polymerase II?
(a) RNA polymerase II moves along the coding strand of DNA and uses it to
provide information to synthesize a complementary strand of DNA during
replication.
(b) RNA polymerase II moves along the template strand of DNA and uses it to
provide information to synthesize a complementary strand of DNA during
replication.
(c) RNA polymerase II moves along the coding strand of DNA and uses it so
provide information to synthesize a complementary strand of mRNA during
transcription.
(d) RNA polymerase II moves along the template strand of DNA and uses it to
provide information to synthesize a complementary strand of mRNA during
transcription. - ANSWER (d) RNA polymerase II moves along the template strand of DNA and uses it to
provide information to synthesize a complementary strand of mRNA during
transcription.
Assume you have recently isolated double-stranded DNA and quantified the
amount of each nucleotide that is present in the sample. You find that there is
20% adenine (A). Using this information, you think you can determine the
amount of cytosine (C) residues that are present in the sample. After
considering that, you conclude that
(a) C = 15%
(b) C = 20%
, (c) C = 30%
(d) C = 60%
(e) Based on the information provided, you cannot make a conclusion about the
amount of C that is present. - ANSWER (c) C = 30%
in eukaryotes, the first version on the transcript that is produced is called pre-mRNA. It is then processed
by the removal of ____ sequences, the addition of a polyA tail and the addition of a 5' cap. this produces
the final mature mRNA. - ANSWER intron
The addition of 1 or 2 nucleotides into a DNA sequence causes a __________________
mutation in the corresponding polypeptide sequence that it encodes. - ANSWER frameshift
The _____________________________ is the region at the end of a linear chromosome
that requires a special system for replication. - ANSWER telomere
6. The chromosome theory of inheritance first proposed that the chromosomes
carry the genetic information. Even then, it was known that chromosomes
consist of ________________________________________.
(a) Large amounts of DNA and RNA and small amounts of protein
(b) Large amounts of DNA and RNA but no protein
(c) Large amounts of DNA and protein and small amounts of RNA
(d) Large amounts of DNA but no protein and no RNA - ANSWER (c) Large amounts of DNA and protein
and small amounts of RNA
7. During replication, the enzyme/protein that helps separate two strands of DNA
as the replication fork moves in either direction is called
(a) endonuclease
(b) openase
(c) primase
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