BIOLOGY 1050- EXAM 3 ECU
UPDATED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Question 1.
Which of the following chromosomes is not
ANSWER
human sex A. XY possible? B. XXY C.X__ D.XX E.Y__ The correct answer is E.
Question 2.
What are the two cellular division in
ANSWER
major methods of A. Meiosis and Cloning
eukaryotic cells? B. Fission and Cloning
C. Meiosis and Mitosis
D. Mitosis and Cloning
E. Meiosis and Fission The correct answer is C.
Question 3.
The formation of a organism from a fertilized is called development. ment is accomplished
processes of:
ANSWER
multicellular A.Fission and Cytokinesis egg B.Meiosis alone Develop- C.Mitosis and cytokinesis
through the D.Mitosis alone E.Meiosis and cytokinesis The correct answer is C.
Question 4.
A Karyotype:
ANSWER
A. reveals the autosomes but not the sex chromo- somes.
B. can be produced only from cells in telophase of mitosis or telophase II of meiosis.
c. requires a haploid gamete.
D. can be produced only from cells in telophase of mitosis.
E. can be used to diagnose Down syndrome in humans. The correct answer is E.
,Question 5.
A Punnett squarer tool as it can help heritance of all traits.
ANSWER
is a very useful A. True us predict the in- B. False The correct answer is B. False.
Question 6.
Cystic fibrosis, which lethal before reproductive a homozygous recessive Why do cases continue
even though people ease rarely live to
ANSWER
is usually a. Mosquitoes can transfer the disease from person to
ages, is person.
disease. b. The harmful allele can reside in heterozygous indito arise, viduals with few to no
negative effects.
with the dis- c.Individuals can pass on the alleles in non-genetic
reproduce? ways, including through the sharing of needles.
d. People continue to make unhealthy lifestyle choices. e.Cystic fibrosis is a multifactorial
disorder, and is probably controlled by the action of many genes. The correct answer is B.
Question 7.
Some fertility clinics that a couple can their baby. What technique low for this?
ANSWER
now promise a.
choose the sex of Separating the father's sperm according to weight,
might al- because the X chromosome weighs more than the Y
chromosome.
b.
Separating the father's sperm according to weight,
because the Y chromosome weighs more than the X
chromosome.
c.
Add a fluorescent dye to the father's sperm-sperm
that show more fluorescence contain a Y chromo-
some.
d.Add a fluorescent dye to the father's sperm-sperm
that show more fluorescence contain an X chromosome.
e. Both a and d are correct. The correct answer is both a and d are correct.
, Question 8.
Assuming that a particular is caused by an allele gene, what feature would allow one to the disorder
was caused nant allele?
ANSWER
disorder a. Two unaffected parents have an unaffected child. of a single b. Two unaffected
parents have an affected child. of a pedigree c. An affected mother only has affected sons.
conclude that d. Two affected parents have an unaffected child. by a domi- e. All of the
descendants of a particular affected person are also affected. The correct answer is D.
Question 9.
Shown is a pedigree disease. What is Laura's
ANSWER
for a genetic a.aa
genotype? b. no disease
c.Aa
d. disease
e. AA The correct answer is C.
Question 10.
What is the definition
ANSWER
of a female? a. producing more gametes
b. producing the larger, more motile gamete
c. producing the larger, less motile gamete
d. producing the smaller, more motile gamete
e. producing the smaller, less motile gamete The correct answer is C.
Question 11.
Most color blindness due to relatively common recessive alleles. Sue with normal color mother who
was color father who had normal Sue marries a man color vision. Sue and have kids. What
proportion (fraction) daughters do you riers of color blindness?
ANSWER
in people is a. All of the daughters will be carriers. sex-linked b. None of the daughters will be
carriers. is a woman c. Half of the daughters will be carriers. vision who has a d. 1/4 of the
daughters will be carriers. blind and a e. 3/4 of the daughters will be carriers. color vision. The
correct answer is C. who has normal her husband of their expect to be car-
UPDATED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Question 1.
Which of the following chromosomes is not
ANSWER
human sex A. XY possible? B. XXY C.X__ D.XX E.Y__ The correct answer is E.
Question 2.
What are the two cellular division in
ANSWER
major methods of A. Meiosis and Cloning
eukaryotic cells? B. Fission and Cloning
C. Meiosis and Mitosis
D. Mitosis and Cloning
E. Meiosis and Fission The correct answer is C.
Question 3.
The formation of a organism from a fertilized is called development. ment is accomplished
processes of:
ANSWER
multicellular A.Fission and Cytokinesis egg B.Meiosis alone Develop- C.Mitosis and cytokinesis
through the D.Mitosis alone E.Meiosis and cytokinesis The correct answer is C.
Question 4.
A Karyotype:
ANSWER
A. reveals the autosomes but not the sex chromo- somes.
B. can be produced only from cells in telophase of mitosis or telophase II of meiosis.
c. requires a haploid gamete.
D. can be produced only from cells in telophase of mitosis.
E. can be used to diagnose Down syndrome in humans. The correct answer is E.
,Question 5.
A Punnett squarer tool as it can help heritance of all traits.
ANSWER
is a very useful A. True us predict the in- B. False The correct answer is B. False.
Question 6.
Cystic fibrosis, which lethal before reproductive a homozygous recessive Why do cases continue
even though people ease rarely live to
ANSWER
is usually a. Mosquitoes can transfer the disease from person to
ages, is person.
disease. b. The harmful allele can reside in heterozygous indito arise, viduals with few to no
negative effects.
with the dis- c.Individuals can pass on the alleles in non-genetic
reproduce? ways, including through the sharing of needles.
d. People continue to make unhealthy lifestyle choices. e.Cystic fibrosis is a multifactorial
disorder, and is probably controlled by the action of many genes. The correct answer is B.
Question 7.
Some fertility clinics that a couple can their baby. What technique low for this?
ANSWER
now promise a.
choose the sex of Separating the father's sperm according to weight,
might al- because the X chromosome weighs more than the Y
chromosome.
b.
Separating the father's sperm according to weight,
because the Y chromosome weighs more than the X
chromosome.
c.
Add a fluorescent dye to the father's sperm-sperm
that show more fluorescence contain a Y chromo-
some.
d.Add a fluorescent dye to the father's sperm-sperm
that show more fluorescence contain an X chromosome.
e. Both a and d are correct. The correct answer is both a and d are correct.
, Question 8.
Assuming that a particular is caused by an allele gene, what feature would allow one to the disorder
was caused nant allele?
ANSWER
disorder a. Two unaffected parents have an unaffected child. of a single b. Two unaffected
parents have an affected child. of a pedigree c. An affected mother only has affected sons.
conclude that d. Two affected parents have an unaffected child. by a domi- e. All of the
descendants of a particular affected person are also affected. The correct answer is D.
Question 9.
Shown is a pedigree disease. What is Laura's
ANSWER
for a genetic a.aa
genotype? b. no disease
c.Aa
d. disease
e. AA The correct answer is C.
Question 10.
What is the definition
ANSWER
of a female? a. producing more gametes
b. producing the larger, more motile gamete
c. producing the larger, less motile gamete
d. producing the smaller, more motile gamete
e. producing the smaller, less motile gamete The correct answer is C.
Question 11.
Most color blindness due to relatively common recessive alleles. Sue with normal color mother who
was color father who had normal Sue marries a man color vision. Sue and have kids. What
proportion (fraction) daughters do you riers of color blindness?
ANSWER
in people is a. All of the daughters will be carriers. sex-linked b. None of the daughters will be
carriers. is a woman c. Half of the daughters will be carriers. vision who has a d. 1/4 of the
daughters will be carriers. blind and a e. 3/4 of the daughters will be carriers. color vision. The
correct answer is C. who has normal her husband of their expect to be car-
