Which of the following occur in meiosis but not in mitosis?
Chromosome replication
Growth of cells prior to division
Crossing over
Production of daughter cells
Homologous chromosomes are defined as
Chromosomes in which all sets come from each grandparent
Chromosomes in which a set comes from each parent
Chromosomes in which all sets come from the female
Chromosomes in which all sets come from the male
Which of the following is true of the process of meiosis?
Four diploid cells result
Two diploid cells result
Four haploid cells result
Four somatic cells result
In animals, somatic cells are produced by mitosis and _______ are produced by meiosis
Diploid cells
Spores
Gametes
Clones
If the liver cells of an animal have 24 chromosomes, how many chromosomes do its sperm cells have?
6
24
12
28
In which phase of meiosis are tetrads of chromosomes aligned at the center of the cell and independent assortment occurs?
Anaphase I
Metaphase II
Metaphase I
Prophase I
In which phase of meiosis does crossing over occur?
Prophase I
Prophase II
Metaphase II
Anaphase I
The human X and Y chromosomes are:
Both are present in every somatic cell in males and females
Approximately the same size
Called "sex chromosomes" because they determine sex
All of the listed answers are correct
Which of the following is NOT correct?
Mitosis produces genetically identical cells
Metaphase occurs before anaphase
All somatic cells are produced by mitosis
Cytokinesis is a part of mitosis
Homologous chromosomes separate during what phase?
Anaphase I
Telophase II
Telophase I
Anaphase II
After telophase I of meiosis, the chromosomal makeup of each daughter cell is
diploid, the chromosomes are composed of a single chromatid
diploid, the chromosomes are composed of 2 chromatids
haploid, the chromosomes are composed of 2 chromatids
haploid, the chromosomes are composed of a single chromatid
Which of the following phases of cell division is different for animal and plant cells?
Cytokinesis
Interphase
Anaphase
Metaphase
During Metaphase II...
Sister chromatids separate
Sister chromatids line up in the middle of the cell
Homologous chromosomes line up in the middle of the cell
Crossing over occurs
Which of the following statements about crossing over is incorrect?
It occurs during prophase I of meiosis
It leads to increase in genetic diversity
It plays a role in meiosis and mitosis
It combines sections of paternal & maternal chromosomes
What process occurs during Prophase I in meiosis that contributes to genetic variability?
Crossing over
Mitosis
Replication
Independent assortment
If a diploid cell containing 46 chromosomes undergoes meiosis, how many chromosomes will each daughter cell have?
23
96
12
24
Which of the following is true of a species that has a chromosome number of 2n = 16?
None of these options are correct
The species is diploid with 16 chromosomes
A gamete from this species has 4 chromosomes
The species is diploid with 32 chromosomes
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
A plant cell in the S phase of the cell cycle
An animal cell in the S phase of the cell cycle
An animal cell in the process of cytokinesis
The picture shows which phase of mitosis?
Anaphase
Metaphase
Interphase
Telophase
Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X chromosomes?
A sperm cell
A male autosomal cell
An unfertilized egg cell
A female somatic cell
During which stage of mitosis do nucleii reappear?
Anaphase
Telophase
Metaphase
Prophase
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
Prophase
Anaphase
Telophase
Which of the following happens at the conclusion of meiosis I?
The chromosome number is conserved
Sister chromatids are separated
Homologous chromosomes are separated
Four daughter cells are formed
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?
Telophase
Metaphase
Anaphase
Prophase
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
Spindle fiber formation
Synthesis of chromatids
Cell membrane synthesis
When comparing prophase I of meiosis with prophase of mitosis, which of the following occurs on in meiosis?
Tetrads form
The nuclear envelope disappears
Spindle fibers form
The chromosomes condense
The correct sequence of the steps in M phase of the cell cycle is
Prophase Metaphase Cytokinesis Telophase
Prophase Metaphase Anaphase Telophase
Prophase Metaphase Telophase Anaphase
Cytokinesis Telophase Prophase Metaphase
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.
8 mg, 16 mg
16 mg, 8 mg
8 mg, 8 mg
16 mg, 16 mg
What is a karyotype?
A system of classifying cell nuclei
A collection of all the mutations in a genome
A display of every pair of homologous chromosomes in a cell
A set of physical characteristics that define a person
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
The cell goes through two stages of cell division
Replication of genetic material
The process of meiosis results in
Four genetically identical cells
Two genetically different cells
Four genetically different cells
Two genetically identical cells
Chromosomes form tetrads during
Metaphase I of meiosis
Anaphase II of meiosis
Interphase
Prophase I of meiosis
The picture shows which phase of the cell cycle?
G1
G2
S
M phase
Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called:
Sex chromatids
Sex chromosomes
Sister chromosomes
Sister chromatids
Which of the following cells is in a haploid state?
Skin cells
Liver cells
Brain cells
Egg cells
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...
Interphase
Meiosis
Cytokinesis
Mitosis
Unlike mitosis, meiosis results from the formation of
Haploid cells
Body cells
2n daughter cells
Diploid cells