BIO340 Genetics
Exam 1 Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, In the Hershey-Chase experiment radioactive Sulfur was used to: - Correct Ans: Be incorporated into the
phage protein coat because some amino acids contain sulfur
In Griffith's experiments, what made the harmless R cells grow capsules when exposed to heat-killed S
cells? - Correct Ans: DNA
The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the
basis of the finding that: - Correct Ans: Radioactive phosphorus was found inside the cell
If DNA of a particular species was analyzed and it was found that it contains 27 percent of adenine (A),
what would be the percentage of cytosine (C)? - Correct Ans: 23 (A=T, C=G)
Four nucleic acid samples are analyzed to determine the percentages of the nucleotides they contain.
Which of the following DNA sample(s) could be double-stranded DNA? Sample 1: A(22%), G(28%),
T(22%), U(0%), C(28%); Sample 2: A(30%), G(30%), T(0%), U(20%), C(20%); Sample 3: A(18%), G(32%),
T(0%), U(18%), C(32%); Sample 4: A(29%), G(29%), T(21%), U(0%), C(21%) - Correct Ans: Sample 1
(There is no "U" in DNA)
The group that gives DNA its negative charge is located on: - Correct Ans: 5' end (Phosphate group is
ALWAYS on 5' end and is negative)
Correct order of flow of biological information? - Correct Ans: DNA replicates, transcribes to RNA, RNA
translates to protein
Which statement about analogies is correct? - Correct Ans: They are derived from similar environmental
constraints
What do scientists use to apply cladistics? - Correct Ans: homologous traits
What is true about organisms that are a part of the same clade? - Correct Ans: They evolved from a
shared ancestor
Exam 1 Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, In the Hershey-Chase experiment radioactive Sulfur was used to: - Correct Ans: Be incorporated into the
phage protein coat because some amino acids contain sulfur
In Griffith's experiments, what made the harmless R cells grow capsules when exposed to heat-killed S
cells? - Correct Ans: DNA
The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the
basis of the finding that: - Correct Ans: Radioactive phosphorus was found inside the cell
If DNA of a particular species was analyzed and it was found that it contains 27 percent of adenine (A),
what would be the percentage of cytosine (C)? - Correct Ans: 23 (A=T, C=G)
Four nucleic acid samples are analyzed to determine the percentages of the nucleotides they contain.
Which of the following DNA sample(s) could be double-stranded DNA? Sample 1: A(22%), G(28%),
T(22%), U(0%), C(28%); Sample 2: A(30%), G(30%), T(0%), U(20%), C(20%); Sample 3: A(18%), G(32%),
T(0%), U(18%), C(32%); Sample 4: A(29%), G(29%), T(21%), U(0%), C(21%) - Correct Ans: Sample 1
(There is no "U" in DNA)
The group that gives DNA its negative charge is located on: - Correct Ans: 5' end (Phosphate group is
ALWAYS on 5' end and is negative)
Correct order of flow of biological information? - Correct Ans: DNA replicates, transcribes to RNA, RNA
translates to protein
Which statement about analogies is correct? - Correct Ans: They are derived from similar environmental
constraints
What do scientists use to apply cladistics? - Correct Ans: homologous traits
What is true about organisms that are a part of the same clade? - Correct Ans: They evolved from a
shared ancestor
