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Mitosis & Meiosis
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If the cell whose nuclear material is shown below continues toward completion of mitosis, which of the following events would occur next?
 
chromosomes would separate
 
spindle fiber forms
 
cell membrane replicates
 
Chromosomes disappear
The below cell is in which phase of the cell cycle?
 
m phase
 
G1
 
S
 
G2
The cell below is in which phase of mitosis?
 
Anaphase
 
Metaphase
 
Prophase
 
Telophase
The phase in which the cell grows and DNA is duplicated is represented by
 
B
 
A
 
D
 
E
Anaphase is represented by
 
C
 
D
 
B
 
A
The phase in which centrioles move to opposite poles, chromosomes begin to condense, and the nuclear membrane begins to disappear is represented by
 
D
 
A
 
B
 
E
The correct sequence of steps in the M phase of the cell cycle is
 
Prophase, metaphase, anaphase, telophase
 
telophase, metaphase, anaphase, prophase
 
metaphase, anaphase, telophase, prophase
 
Prophase, telophase, anaphase, metaphase
A group of cells is tested for DNA content immediately following mitosis and is found to have an average of 10 mg or DNA per nucleus. Those cells would have ___________mg at the end of S phase and ________ mg at the end of G2.
 
20,20
 
8,8
 
10,20
 
10,10
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?
 
Metapahse
 
Telophase
 
Anaphase
 
Prophase
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 process of cytokinesis
 
An animal cell in the S phase
 
A plant cell in the S phase
What is a karyotype?
 
a display of every pair of homologous chromosomes within
 
a system of classifying cell nuclei
 
an animal cell in the process of cytokinesis
 
a collection of mutations
The humans X and Y chromosomes are:
 
are called sex chromosomes
 
are the same size
 
are found in every living individual
 
all the above
If the liver cells of an animal have 24 chromosomes, how many chromosomes do its sperm cells have?
 
12
 
24
 
48
 
6
Which of the following is true of a species that has a chromosome number of 2n=16?
 
the species is diploid with 32 chromosomes
 
the species is diploid with 16 chromosomes
 
a gamete from this species has 4 chromosomes
 
none of the above
Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X chromosomes?
 
a female somatic cell
 
a sperm cell
 
an egg cell
 
all the above
In animals, somatic cells are produced by mitosis and _______________ are produced by meiosis.
 
Gametes
 
clones
 
spores
 
diploid cells
In which phase of meiosis are tetrads of chromosomes aligned at the center of the cell and independent assortment occurs?
 
Metaphase I
 
Anaphase I
 
Telophase I
 
Metaphase II
In which phase of meiosis does crossing over occur?
 
Prophase I
 
Metaphase I
 
Anaphase I
 
Prophase II
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
Which of the following is true of the process of meiosis?
 
four haploid cells result
 
four diploid cells result
 
two diploid cells result
 
two haploid cells result
Which of the following occurs is meiosis but not in mitosis?
 
crossing over
 
chromosome replication
 
Production of daughter Cells
 
Growth of cells prior to division
When comparing prophase I of meiosis with prophase of mitosis, which of the following occurs only in meiosis?
 
tetrads form
 
the chromosomes condense
 
the nuclear envelope disappears
 
spindle fibers form
Which of the following statements about crossing over is incorrect?
 
Plays a role in mitosis & meiosis
 
Combines sections of maternal & Paternal chromosomes
 
Leads to an increase in genetic diversity
 
Occurs during prophase I of meiosis
The below cell is in which phase of meiosis?
 
Prophase I
 
Anaphase I
 
Prophase II
 
Anaphase II
The below cell is in which phase of meiosis?
 
Anaphase I
 
Prophase II
 
Telophase I
 
Anaphase II
Which statement best describes a difference between mitosis and meiosis?
 
mitosis produces identical cells, but not meiosis
 
meiosis repairs an organism while mitosis does not
 
Mitosis occurs in eukaryotic cells & meiosis in prokaryotic
 
Meiosis is a multistep process but not mitosis
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