BSC 108 EXAM 3 QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
Mendel used ___________ for his experiments.
A. Wild-type Birds
B. Mice
C. Garden Sweet Peas
D. Zebra Fish - ANS C
In humans, the ___________ determines the sex of the offspring because ___________.
A. male...the sperm can fertilize either a female egg or a male egg.
B. female...only the female has two functional sex chromosomes.
C. female...only the female provides cytoplasm to the zygote.
D. male...the male can contribute either an X or a Y chromosome. - ANS D
Which of the following is not one of the four components of Mendel's hypothesis of
inheritance?
A. There are alternative versions of genes, the units that determine heritable traits.
B. For each inherited character, an organism inherits 2 alleles; one from each parent.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, C. If the 2 alleles of an inherited pair differ, then the one that determines the appearance is
called dominant and the other has no noticeable effect on appearance is called recessive.
D. A sperm or egg carries only 1 allele for each inherited character because the 2 membranes of
an allele pair segregate during gamete production.
E. Inherited pairs of genes are found in each of the parental crosses. - ANS E
How do new viruses arise?
A. Mutation of existing viruses
B. Not taking all your antibiotics
C. Spread to new host species
D. All of the above are correct
E. Only A and C are correct - ANS E
In DNA, the nucleotides are on the outside of the double helix.
A. True
B. False - ANS B
DNA technology has revolutionized forensic science. Several unsolved cases have been solved
with this type of evidence, and some convicted persons have been exonerated with DNA
evidence. What is the type of technology shown in the image?
A. Centrifugation
B. DNA splicing
C. Gel Electrophoresis
D. Polymerase Chain Reaction - ANS C
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS. VERIFIED 2025/2026.
Mendel used ___________ for his experiments.
A. Wild-type Birds
B. Mice
C. Garden Sweet Peas
D. Zebra Fish - ANS C
In humans, the ___________ determines the sex of the offspring because ___________.
A. male...the sperm can fertilize either a female egg or a male egg.
B. female...only the female has two functional sex chromosomes.
C. female...only the female provides cytoplasm to the zygote.
D. male...the male can contribute either an X or a Y chromosome. - ANS D
Which of the following is not one of the four components of Mendel's hypothesis of
inheritance?
A. There are alternative versions of genes, the units that determine heritable traits.
B. For each inherited character, an organism inherits 2 alleles; one from each parent.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, C. If the 2 alleles of an inherited pair differ, then the one that determines the appearance is
called dominant and the other has no noticeable effect on appearance is called recessive.
D. A sperm or egg carries only 1 allele for each inherited character because the 2 membranes of
an allele pair segregate during gamete production.
E. Inherited pairs of genes are found in each of the parental crosses. - ANS E
How do new viruses arise?
A. Mutation of existing viruses
B. Not taking all your antibiotics
C. Spread to new host species
D. All of the above are correct
E. Only A and C are correct - ANS E
In DNA, the nucleotides are on the outside of the double helix.
A. True
B. False - ANS B
DNA technology has revolutionized forensic science. Several unsolved cases have been solved
with this type of evidence, and some convicted persons have been exonerated with DNA
evidence. What is the type of technology shown in the image?
A. Centrifugation
B. DNA splicing
C. Gel Electrophoresis
D. Polymerase Chain Reaction - ANS C
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
