BIO 171 EXAM 3 ACTUAL QUESTIONS WITH
VERIFIED SOLUTIONS
◉ Which of the following statements describes a major difference
between meiosis I and mitosis in a diploid organism?
a. sister chromatins separate in mitosis, while homologous pairs of
chromosomes separate in meiosis I
b. sister chromatids separate in mitosis, while homologous pairs of
chromosomes separate in meiosis II
c. DNA replication takes place prior to mitosis, but not before
meiosis I
d. only meiosis I results in daughter cells that contain identical
genetic information.
Answer: a. sister chromatins separate in mitosis, while homologous
pairs of chromosomes separate in meiosis I
◉ During which of the following phases of meiosis do centromeres
split and sister chromatids migrate to opposite poles of the cell?
a. anaphase I
b. telophase I
c. anaphase II
,d. telophase II.
Answer: c. anaphase II
◉ Homologous chromosomes are aligned at the spindle in
________________
a. metaphase I
b. metaphase II.
Answer: a. metaphase I
◉ Which of the following phrases defines the term genome?
a. the complete set of an organism's polypeptides
b. the complete set of a species' polypeptides
c. the complete set of a species expressed traits
d. the complete set of an organism's genes and other DNA sequences.
Answer: d. the complete set of an organisms genes and other DNA
sequences
◉ A particular organism has 46 chromosomes in its karyotype.
Which of the following statements is correct regarding this
organism?
, a. it must be human
b. it must be an animal
c. it reproduces asexually
d. it produces gametes with 23 chromosomes.
Answer: d. it produces gametes with 23 chromosomes
◉ Which of the following pairs of processes make the greatest
contribution to genetic diversity between generations of a diploid
insect?
a. random fertilization and cytokinesis
b. alternation of generations and crossing over
c. independent assortment and random fertilization
d. gametophyte fusion and mitotic division.
Answer: c. independent assortment and random fertilization
◉ Which of the following processes has just occurred when
chiasmata can first be viewed under a microscope?
a. meiosis II
b. anaphase II
c. prophase I
VERIFIED SOLUTIONS
◉ Which of the following statements describes a major difference
between meiosis I and mitosis in a diploid organism?
a. sister chromatins separate in mitosis, while homologous pairs of
chromosomes separate in meiosis I
b. sister chromatids separate in mitosis, while homologous pairs of
chromosomes separate in meiosis II
c. DNA replication takes place prior to mitosis, but not before
meiosis I
d. only meiosis I results in daughter cells that contain identical
genetic information.
Answer: a. sister chromatins separate in mitosis, while homologous
pairs of chromosomes separate in meiosis I
◉ During which of the following phases of meiosis do centromeres
split and sister chromatids migrate to opposite poles of the cell?
a. anaphase I
b. telophase I
c. anaphase II
,d. telophase II.
Answer: c. anaphase II
◉ Homologous chromosomes are aligned at the spindle in
________________
a. metaphase I
b. metaphase II.
Answer: a. metaphase I
◉ Which of the following phrases defines the term genome?
a. the complete set of an organism's polypeptides
b. the complete set of a species' polypeptides
c. the complete set of a species expressed traits
d. the complete set of an organism's genes and other DNA sequences.
Answer: d. the complete set of an organisms genes and other DNA
sequences
◉ A particular organism has 46 chromosomes in its karyotype.
Which of the following statements is correct regarding this
organism?
, a. it must be human
b. it must be an animal
c. it reproduces asexually
d. it produces gametes with 23 chromosomes.
Answer: d. it produces gametes with 23 chromosomes
◉ Which of the following pairs of processes make the greatest
contribution to genetic diversity between generations of a diploid
insect?
a. random fertilization and cytokinesis
b. alternation of generations and crossing over
c. independent assortment and random fertilization
d. gametophyte fusion and mitotic division.
Answer: c. independent assortment and random fertilization
◉ Which of the following processes has just occurred when
chiasmata can first be viewed under a microscope?
a. meiosis II
b. anaphase II
c. prophase I
