BSC 1010C Chapter 15 & 16 Questions With Complete
Solutions
_____ is the process by which haploid gametes form a diploid
zygote. Correct Answers Fertilization
+The joining of haploid gametes produces a diploid zygote.
A man with hemophilia (a recessive, sex-linked condition) has a
daughter without hemophilia who marries a man without
hemophilia.What is the probability of their daughter having
hemophilia?What is the probability of their son having
hemophilia?If they have four sons, what is the probability that
all will be affected? Correct Answers 0
1/2
1/16
A nitrogenous base is indicated by the letter _____. Correct
Answers C
+This is a nitrogenous base.
A particular diploid plant species has 48 chromosomes, or two
sets. A mutation occurs and gametes with 48 chromosomes are
produced. If self-fertilization occurs, the zygote will have _____
set(s) of chromosomes. Correct Answers 4
+If self-fertilization occurs, and two gametes (each having 48
chromosomes) unite, the zygote will have 96 chromosomes (or 4
sets).
,A white-eyed female Drosophila is crossed with a red-eyed male
Drosophila. Which statement below correctly describes the
results? Correct Answers None of the females will have white
eyes.
+All of the females will have red eyes because they will inherit
the dominant red-eye allele from their male parent.
After allowing phages grown with bacteria in a medium that
contained 32P and 35S, Hershey and Chase used a centrifuge to
separate the phage ghosts from the infected cell. They then
examined the infected cells and found that they contained
_____, which demonstrated that _____ is the phage's genetic
material. Correct Answers labeled DNA ... DNA
+Since the phage DNA entered the infected cell, it makes sense
that DNA is the genetic material.
After DNA replication is completed, _____. Correct Answers
each new DNA double helix consists of one old DNA strand and
one new DNA strand.
+DNA replication is semiconservative.
An old DNA strand is used as a _____ for the assembly of a new
DNA strand. Correct Answers template
+An old DNA strand is used as a template for the synthesis of a
complementary new strand.
, DNA is a self-replicating molecule. What accounts for this
important property of DNA? Correct Answers The nitrogenous
bases of the double helix are paired in specific combinations: A
with T and G with C.
+Because of the specificity of the pairing of the nitrogenous
bases, each strand of the double helix specifies the matching
sequence of bases on the other strand. During replication, when
the strands separate, each strand serves as a template for the
replication of other strand. Read about base pairing in DNA.
During DNA replication, the leading strand is synthesized
continuously, whereas the lagging strand is synthesized as
Okazaki fragments. Why is this so? Correct Answers DNA
synthesis can take place only in the 5' to 3' direction.
+
Griffith's experiments with S. pneumoniae were significant
because they showed that traits could be transferred from one
organism to another. What else did he find that was significant?
Correct Answers the transferred traits were heritable
+The fact that offspring of transformed bacteria also showed the
pathogenic trait meant that the transforming agent had to be
involved with the genetic material.
Hershey and Chase used _____ to radioactively label the T2
phage's proteins. Correct Answers 35S
Solutions
_____ is the process by which haploid gametes form a diploid
zygote. Correct Answers Fertilization
+The joining of haploid gametes produces a diploid zygote.
A man with hemophilia (a recessive, sex-linked condition) has a
daughter without hemophilia who marries a man without
hemophilia.What is the probability of their daughter having
hemophilia?What is the probability of their son having
hemophilia?If they have four sons, what is the probability that
all will be affected? Correct Answers 0
1/2
1/16
A nitrogenous base is indicated by the letter _____. Correct
Answers C
+This is a nitrogenous base.
A particular diploid plant species has 48 chromosomes, or two
sets. A mutation occurs and gametes with 48 chromosomes are
produced. If self-fertilization occurs, the zygote will have _____
set(s) of chromosomes. Correct Answers 4
+If self-fertilization occurs, and two gametes (each having 48
chromosomes) unite, the zygote will have 96 chromosomes (or 4
sets).
,A white-eyed female Drosophila is crossed with a red-eyed male
Drosophila. Which statement below correctly describes the
results? Correct Answers None of the females will have white
eyes.
+All of the females will have red eyes because they will inherit
the dominant red-eye allele from their male parent.
After allowing phages grown with bacteria in a medium that
contained 32P and 35S, Hershey and Chase used a centrifuge to
separate the phage ghosts from the infected cell. They then
examined the infected cells and found that they contained
_____, which demonstrated that _____ is the phage's genetic
material. Correct Answers labeled DNA ... DNA
+Since the phage DNA entered the infected cell, it makes sense
that DNA is the genetic material.
After DNA replication is completed, _____. Correct Answers
each new DNA double helix consists of one old DNA strand and
one new DNA strand.
+DNA replication is semiconservative.
An old DNA strand is used as a _____ for the assembly of a new
DNA strand. Correct Answers template
+An old DNA strand is used as a template for the synthesis of a
complementary new strand.
, DNA is a self-replicating molecule. What accounts for this
important property of DNA? Correct Answers The nitrogenous
bases of the double helix are paired in specific combinations: A
with T and G with C.
+Because of the specificity of the pairing of the nitrogenous
bases, each strand of the double helix specifies the matching
sequence of bases on the other strand. During replication, when
the strands separate, each strand serves as a template for the
replication of other strand. Read about base pairing in DNA.
During DNA replication, the leading strand is synthesized
continuously, whereas the lagging strand is synthesized as
Okazaki fragments. Why is this so? Correct Answers DNA
synthesis can take place only in the 5' to 3' direction.
+
Griffith's experiments with S. pneumoniae were significant
because they showed that traits could be transferred from one
organism to another. What else did he find that was significant?
Correct Answers the transferred traits were heritable
+The fact that offspring of transformed bacteria also showed the
pathogenic trait meant that the transforming agent had to be
involved with the genetic material.
Hershey and Chase used _____ to radioactively label the T2
phage's proteins. Correct Answers 35S
