1|Page
BIO 311D Organismal Biology, Ecology, and Evolution
Final Verified Exam Study Set, 2026/2027-Question
Integrative Biology Examination with Verified
Solutions||Newest Exam!!!
Which of the following would be an exception to the
principle of independent assortment?
a. crossing over
b. segregation of alleles
c. co-dominant alleles
d. lethal alleles
e. linked genes - Answer-e. Linked genes
For a species with a haploid number of 23 chromosomes,
how many different combinations of maternal and paternal
chromosomes are possible for the gamete based on the
independent assortment of chromosomes during meiosis?
a. 23
b. 46
c. about 1000
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d. about 8 million - Answer-d. about 8 million
Which of the following is not part of sexual reproduction?
a. the segregation of homologous chromosomes during
gamete formation
b. genetic recombination during meiosis I
c. the separation of sister chromatids during meiosis I
d. the production of genetically distinct gametes during
meiosis. - Answer-c. the separation of sister chromatids
during meiosis I
A couple, both of whom are heterozygous carriers of the
cystic fibrosis allele (simple recessive trait) but do not
have the disease cystic fibrosis, plan to have 2 kids. What
is the probability that BOTH children will have C.F.?
a. 0
b. 1/16
c. 1/4
d. 1/2
e. none of these is correct - Answer-b. 1/16
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Imagine that there are 25 different species of protists living
in a tide pool. Some of these species reproduce both
sexually and asexually, and some of them can reproduce
only asexually. The pool gradually becomes infested with
disease-causing viruses and bacteria. Which species are
more likely to succeed and thrive in the changing
environment?
a. The sexually reproducing species is likely to thrive.
b. The asexually reproducing species is likely to thrive.
c. Sexually and asexually reproducing species are equally
likely to thrive.
d. Neither species will be able to thrive. - Answer-a. The
sexually reproducing species is likely to thrive
Which statement about an individual that is homozygous
for a specific allele is not true?
a. Each of its cells possesses two copies of that allele
b. Each of the gametes it produces contains one copy of
that allele
c. Both of its parents had to be homozygous for that allele.
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d. It is true-breeding with respect to that allele (will pass
allele to all offspring) - Answer-c. Both of its parents had to
be homozygous for that allele.
Which of these sets of parents ( blood type phenotype
given) is probably not correctly matched to their child (by
blood type)?
a. Parents A and B, child AB
b. Parents A and O, child AB
c. Parents A and O, child O
d. Parents A and B, child O
e. Parents AB and B, child AB - Answer-b. Parents A and
O, child AB
A mouse shows the dominant short-hair phenotype but
has unknown genotype (one locus, simple dominance of
short hair over long hair). To do a test cross, you would
mate this individual with which of these?
a. Any short-hair mouse
b. Any long-haired mouse
BIO 311D Organismal Biology, Ecology, and Evolution
Final Verified Exam Study Set, 2026/2027-Question
Integrative Biology Examination with Verified
Solutions||Newest Exam!!!
Which of the following would be an exception to the
principle of independent assortment?
a. crossing over
b. segregation of alleles
c. co-dominant alleles
d. lethal alleles
e. linked genes - Answer-e. Linked genes
For a species with a haploid number of 23 chromosomes,
how many different combinations of maternal and paternal
chromosomes are possible for the gamete based on the
independent assortment of chromosomes during meiosis?
a. 23
b. 46
c. about 1000
,2|Page
d. about 8 million - Answer-d. about 8 million
Which of the following is not part of sexual reproduction?
a. the segregation of homologous chromosomes during
gamete formation
b. genetic recombination during meiosis I
c. the separation of sister chromatids during meiosis I
d. the production of genetically distinct gametes during
meiosis. - Answer-c. the separation of sister chromatids
during meiosis I
A couple, both of whom are heterozygous carriers of the
cystic fibrosis allele (simple recessive trait) but do not
have the disease cystic fibrosis, plan to have 2 kids. What
is the probability that BOTH children will have C.F.?
a. 0
b. 1/16
c. 1/4
d. 1/2
e. none of these is correct - Answer-b. 1/16
,3|Page
Imagine that there are 25 different species of protists living
in a tide pool. Some of these species reproduce both
sexually and asexually, and some of them can reproduce
only asexually. The pool gradually becomes infested with
disease-causing viruses and bacteria. Which species are
more likely to succeed and thrive in the changing
environment?
a. The sexually reproducing species is likely to thrive.
b. The asexually reproducing species is likely to thrive.
c. Sexually and asexually reproducing species are equally
likely to thrive.
d. Neither species will be able to thrive. - Answer-a. The
sexually reproducing species is likely to thrive
Which statement about an individual that is homozygous
for a specific allele is not true?
a. Each of its cells possesses two copies of that allele
b. Each of the gametes it produces contains one copy of
that allele
c. Both of its parents had to be homozygous for that allele.
, 4|Page
d. It is true-breeding with respect to that allele (will pass
allele to all offspring) - Answer-c. Both of its parents had to
be homozygous for that allele.
Which of these sets of parents ( blood type phenotype
given) is probably not correctly matched to their child (by
blood type)?
a. Parents A and B, child AB
b. Parents A and O, child AB
c. Parents A and O, child O
d. Parents A and B, child O
e. Parents AB and B, child AB - Answer-b. Parents A and
O, child AB
A mouse shows the dominant short-hair phenotype but
has unknown genotype (one locus, simple dominance of
short hair over long hair). To do a test cross, you would
mate this individual with which of these?
a. Any short-hair mouse
b. Any long-haired mouse
