BIO 101 NVCC EXAM 3 ACTUAL EXAM QUESTIONS WITH
100% VERIFIED SOLUTIONS
If a cell has completed the first meiotic division and is just beginning meiosis II,
which of the following statements describes the contents of this cell? - ANSWER
It has half the amount of DNA of the cell that began meiosis.
After telophase I of meiosis, the chromosomal makeup of each daughter cell is -
ANSWER haploid, and the chromosomes are each composed of two chromatids.
When does the synaptonemal complex disappear? - ANSWER late prophase of
meiosis I
Which of the following happens during meiosis I? - ANSWER Homologous
chromosomes of a pair are separated from each other.
Chromatids are separated from each other during which of the following
processes? - ANSWER during both mitosis and meiosis II
Which of the following events occurs in meiosis but not in mitosis? - ANSWER
synapsis of chromosomes
To visualize and identify meiotic cells at metaphase I with a microscope, what
would you look for? - ANSWER pairs of homologous chromosomes all aligned at
the cell's center The following question refers to the essential steps in meiosis
described below.
1. formation of four new nuclei, each with half the chromosomes present in the
parental nucleus
,2. alignment of homologous chromosomes at the metaphase plate
3. separation of sister chromatids
4. separation of the homologs; no uncoupling of the centromere
5. synapsis; chromosomes moving to the middle of the cell in pairs
Which of the steps take(s) place in both mitosis and meiosis? - ANSWER 3
Independent assortment of chromosomes during meiosis is a result of - ANSWER
the random and independent way in which each pair of homologous
chromosomes lines up at the metaphase plate during meiosis I.
During which process does independent assortment of chromosomes occur? -
ANSWER during meiosis I only A human cell containing 22 autosomes and a Y
chromosome is __________. - ANSWER a sperm
Homologous chromosomes move toward opposite poles of a dividing cell during
__________. - ANSWER meiosis I
What do we mean when we use the term monohybrid cross? - ANSWER A
monohybrid cross involves organisms that are heterozygous for one character.
How many unique gametes could be produced through independent assortment
by an individual with the genotype AaBbCCDdEE? - ANSWER 8
A sexually reproducing animal has two unlinked genes, one for head shape (H)
and one for tail length (T). Its genotype is HhTt. Which of the following genotypes
is possible in a gamete from this organism? - ANSWER HT
, When crossing an organism that is homozygous recessive for a single trait with a
heterozygote, what is the chance of producing an offspring with the homozygous
recessive phenotype? - ANSWER 50%
The fact that all seven of the pea plant traits studied by Mendel obeyed the
principle of independent assortment most probably indicates which of the
following? - ANSWER All of the genes controlling the traits behaved as if they
were located on different chromosomes
Mendel's observation of the segregation of alleles in gamete formation has its
basis in which of the following phases of cell division? - ANSWER anaphase I of
meiosis
Mendel's second law of independent assortment has its basis in which of the
following events of meiosis I? - ANSWER alignment of synapsed pairs of
homologous chromosomes on the metaphase plate
Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to
long tails (t). What fraction of the progeny of crosses BbTt × BBtt will be expected
to have black fur and long tails? - ANSWER 1/2
In certain plants, the tall trait is dominant to the short trait. If a heterozygous
plant is crossed with a homozygous tall plant, what is the probability that the
offspring will be short? -
ANSWER 0
Marfan syndrome in humans is caused by an abnormality of the connective tissue
protein fibrillin. Patients are usually very tall and thin, with long spindly fingers,
curvature of the spine, sometimes weakened arterial walls, and sometimes eye
100% VERIFIED SOLUTIONS
If a cell has completed the first meiotic division and is just beginning meiosis II,
which of the following statements describes the contents of this cell? - ANSWER
It has half the amount of DNA of the cell that began meiosis.
After telophase I of meiosis, the chromosomal makeup of each daughter cell is -
ANSWER haploid, and the chromosomes are each composed of two chromatids.
When does the synaptonemal complex disappear? - ANSWER late prophase of
meiosis I
Which of the following happens during meiosis I? - ANSWER Homologous
chromosomes of a pair are separated from each other.
Chromatids are separated from each other during which of the following
processes? - ANSWER during both mitosis and meiosis II
Which of the following events occurs in meiosis but not in mitosis? - ANSWER
synapsis of chromosomes
To visualize and identify meiotic cells at metaphase I with a microscope, what
would you look for? - ANSWER pairs of homologous chromosomes all aligned at
the cell's center The following question refers to the essential steps in meiosis
described below.
1. formation of four new nuclei, each with half the chromosomes present in the
parental nucleus
,2. alignment of homologous chromosomes at the metaphase plate
3. separation of sister chromatids
4. separation of the homologs; no uncoupling of the centromere
5. synapsis; chromosomes moving to the middle of the cell in pairs
Which of the steps take(s) place in both mitosis and meiosis? - ANSWER 3
Independent assortment of chromosomes during meiosis is a result of - ANSWER
the random and independent way in which each pair of homologous
chromosomes lines up at the metaphase plate during meiosis I.
During which process does independent assortment of chromosomes occur? -
ANSWER during meiosis I only A human cell containing 22 autosomes and a Y
chromosome is __________. - ANSWER a sperm
Homologous chromosomes move toward opposite poles of a dividing cell during
__________. - ANSWER meiosis I
What do we mean when we use the term monohybrid cross? - ANSWER A
monohybrid cross involves organisms that are heterozygous for one character.
How many unique gametes could be produced through independent assortment
by an individual with the genotype AaBbCCDdEE? - ANSWER 8
A sexually reproducing animal has two unlinked genes, one for head shape (H)
and one for tail length (T). Its genotype is HhTt. Which of the following genotypes
is possible in a gamete from this organism? - ANSWER HT
, When crossing an organism that is homozygous recessive for a single trait with a
heterozygote, what is the chance of producing an offspring with the homozygous
recessive phenotype? - ANSWER 50%
The fact that all seven of the pea plant traits studied by Mendel obeyed the
principle of independent assortment most probably indicates which of the
following? - ANSWER All of the genes controlling the traits behaved as if they
were located on different chromosomes
Mendel's observation of the segregation of alleles in gamete formation has its
basis in which of the following phases of cell division? - ANSWER anaphase I of
meiosis
Mendel's second law of independent assortment has its basis in which of the
following events of meiosis I? - ANSWER alignment of synapsed pairs of
homologous chromosomes on the metaphase plate
Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to
long tails (t). What fraction of the progeny of crosses BbTt × BBtt will be expected
to have black fur and long tails? - ANSWER 1/2
In certain plants, the tall trait is dominant to the short trait. If a heterozygous
plant is crossed with a homozygous tall plant, what is the probability that the
offspring will be short? -
ANSWER 0
Marfan syndrome in humans is caused by an abnormality of the connective tissue
protein fibrillin. Patients are usually very tall and thin, with long spindly fingers,
curvature of the spine, sometimes weakened arterial walls, and sometimes eye
