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Cell Division Common Assessment
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Which of the following statements about crossing over is incorrect?
 
It plays a role in meiosis and mitosis
 
It combines sections of paternal & maternal chromosomes
 
It leads to increase in genetic diversity
 
It occurs during prophase I of meiosis
When comparing prophase I of meiosis with prophase of mitosis, which of the following occurs on in meiosis?
 
Tetrads form
 
The chromosomes condense
 
The nuclear envelope disappears
 
Spindle fibers form
Which of the following occur in meiosis but not in mitosis?
 
Crossing over
 
Chromosome replication
 
Production of daughter cells
 
Growth of cells prior to division
Which of the following is true of the process of meiosis?
 
Four haploid cells result
 
Four diploid cells result
 
Two diploid cells result
 
Four somatic cells result
Which of the following happens at the conclusion of meiosis I?
 
Homologous chromosomes are separated
 
The chromosome number is conserved
 
Sister chromatids are separated
 
Four daughter cells are formed
In which phase of meiosis does crossing over occur?
 
Prophase I
 
Anaphase I
 
Prophase II
 
Metaphase II
In which phase of meiosis are tetrads of chromosomes aligned at the center of the cell and independent assortment occurs?
 
Metaphase I
 
Metaphase II
 
Prophase I
 
Anaphase I
After telophase I of meiosis, the chromosomal makeup of each daughter cell is
 
haploid, the chromosomes are composed of 2 chromatids
 
haploid, the chromosomes are composed of a single chromatid
 
diploid, the chromosomes are composed of a single chromatid
 
diploid, the chromosomes are composed of 2 chromatids
In animals, somatic cells are produced by mitosis and _______ are produced by meiosis
 
Gametes
 
Clones
 
Diploid cells
 
Spores
Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X chromosomes?
 
An unfertilized egg cell
 
A sperm cell
 
A female somatic cell
 
A male autosomal cell
Which of the following is true of a species that has a chromosome number of 2n = 16?
 
The species is diploid with 16 chromosomes
 
The species is diploid with 32 chromosomes
 
A gamete from this species has 4 chromosomes
 
None of these options are correct
If the liver cells of an animal have 24 chromosomes, how many chromosomes do its sperm cells have?
 
12
 
24
 
28
 
6
The human X and Y chromosomes are:
 
Called "sex chromosomes" because they determine sex
 
Both are present in every somatic cell in males and females
 
Approximately the same size
 
All of the listed answers are correct
What is a karyotype?
 
A display of every pair of homologous chromosomes in a cell
 
A system of classifying cell nuclei
 
A collection of all the mutations in a genome
 
A set of physical characteristics that define a person
Through a microscope, you can see a cell plate beginning to develop across the middle of the cell and nuclei reforming on either side of the cell plate. The cell is most likely
 
A plant cell in the process of cytokinesis
 
An animal cell in the S phase of the cell cycle
 
A plant cell in the S phase of the cell cycle
 
An animal cell in the process of cytokinesis
Imagine looking through a microscope at a squashed onion root tip. In some cells, replicated chromosomes are aligned along the center of the cell. The particular cells are in which stage of mitosis?
 
Metaphase
 
Anaphase
 
Telophase
 
Prophase
A group of cells is tested for DNA content immediately following mitosis and is found to have an average of 8mg of DNA per nucleus. Those cells would have _____ mg at the end of S phase and _____ mg at the end of G2.
 
16 mg, 16 mg
 
16 mg, 8 mg
 
8 mg, 16 mg
 
8 mg, 8 mg
The correct sequence of the steps in M phase of the cell cycle is
 
Prophase Metaphase Anaphase Telophase
 
Prophase Metaphase Telophase Anaphase
 
Cytokinesis Telophase Prophase Metaphase
 
Prophase Metaphase Cytokinesis Telophase
If cells in the process of dividing are exposed to a drug that interferes with the ability of the spindle fibers to bind to the chromosomes, at which stage will mitosis be stopped?
 
Metaphase
 
Prophase
 
Anaphase
 
Telophase
The picture shows which phase of mitosis?
 
Anaphase
 
Metaphase
 
Telophase
 
Interphase
The picture shows which phase of the cell cycle?
 
M phase
 
G1
 
S
 
G2
If the cell whose nuclear material is shown below continues toward completion of mitosis, which of the following events would occur next?
 
Formation of two new nucleii
 
Synthesis of chromatids
 
Spindle fiber formation
 
Cell membrane synthesis
Mitosis and meiosis are both processes involved in cellular reproduction. Which of the following describes an event that results from mitosis but not meiosis?
 
Four daughter cells are produced from each parent cell
 
Daughter cells that are identical to the parent cell
 
Replication of genetic material
 
The cell goes through two stages of cell division
During which stage of mitosis do nucleii reappear?
 
Telophase
 
Anaphase
 
Metaphase
 
Prophase
Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called:
 
Sister chromatids
 
Sister chromosomes
 
Sex chromosomes
 
Sex chromatids
Which of the following phases of cell division is different for animal and plant cells?
 
Cytokinesis
 
Anaphase
 
Metaphase
 
Interphase
Which of the following is NOT correct?
 
Cytokinesis is a part of mitosis
 
Mitosis produces genetically identical cells
 
Metaphase occurs before anaphase
 
All somatic cells are produced by mitosis
During Metaphase II...
 
Sister chromatids line up in the middle of the cell
 
Sister chromatids separate
 
Homologous chromosomes line up in the middle of the cell
 
Crossing over occurs
Chromosomes form tetrads during
 
Prophase I of meiosis
 
Metaphase I of meiosis
 
Interphase
 
Anaphase II of meiosis
Homologous chromosomes separate during what phase?
 
Anaphase I
 
Anaphase II
 
Telophase I
 
Telophase II
Unlike mitosis, meiosis results from the formation of
 
Haploid cells
 
Diploid cells
 
2n daughter cells
 
Body cells
Homologous chromosomes are defined as
 
Chromosomes in which a set comes from each parent
 
Chromosomes in which all sets come from the male
 
Chromosomes in which all sets come from the female
 
Chromosomes in which all sets come from each grandparent
Which of the following cells is in a haploid state?
 
Egg cells
 
Skin cells
 
Liver cells
 
Brain cells
The process of meiosis results in
 
Four genetically different cells
 
Four genetically identical cells
 
Two genetically different cells
 
Two genetically identical cells
What process occurs during Prophase I in meiosis that contributes to genetic variability?
 
Crossing over
 
Independent assortment
 
Replication
 
Mitosis
If a diploid cell containing 46 chromosomes undergoes meiosis, how many chromosomes will each daughter cell have?
 
23
 
96
 
24
 
12
The process of reduction division in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell is known as...
 
Meiosis
 
Mitosis
 
Cytokinesis
 
Interphase
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