Chapter 8
Chromosomes
Cell cycle
Meiosis

A single cell in the liver contains
1.
2.
3.
4.
A haploid number of chromosomes
Diploid number of chromosomes
All the genes of the organism
Only liver genes
25% 25% 25% 25%
1 2 3 4

The diploid number of chromosomes for a human female is
1.
2.
3.
4.
8
23
46
92
25% 25% 25% 25%
1 2 3 4

If a body cell of an organism contains
20 chromosomes, how many chromosomes are in an egg cell
20% 20% 20% 20% 20%
3.
4.
5.
1.
2.
5
10
15
20
40
1 2 3 4 5

3.
4.
5.
1.
2.
In which phase do chromosomes attach to spindle fibers
20% 20% 20% 20%
Interphase
Prophase
Metaphase
Anaphase
Telophase
20%
1 2 3 4 5

Nuclear membrane breaks down
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Cytoplasm divides
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Cell growth occurs
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Spindle fibers form
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Nucleolus reforms
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Chromatids begin to be pulled to opposite poles
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Chromosomes line up at the equator
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Centromeres divide
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Chromatin coils tightly, shortens and thickens, and becomes visible
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Nucleolus present during entire phase
1.
2.
3.
4.
5.
Interphase
Prophase
Metaphase
Anaphase
Telophase
20% 20% 20% 20% 20%
1 2 3 4 5

Produces diploid nuclei
1.
2.
3.
4.
Mitosis only
Meiosis Only
Both mitosis and meiosis
Neither mitosis and meiosis
25% 25% 25% 25%
1 2 3 4

Occurs only in sex organs
1.
2.
3.
4.
Mitosis only
Meiosis Only
Both mitosis and meiosis
Neither mitosis and meiosis
25% 25% 25% 25%
1 2 3 4

DNA is replicated
1.
2.
3.
4.
Mitosis only
Meiosis Only
Both mitosis and meiosis
Neither mitosis and meiosis
25% 25% 25% 25%
1 2 3 4

Produces human cells with 32 chromosomes
1.
2.
3.
4.
Mitosis only
Meiosis Only
Both mitosis and meiosis
Neither mitosis and meiosis
25% 25% 25% 25%
1 2 3 4

Joining of egg and sperm is called
1.
2.
3.
4.
a daughter cell a mother cell a zygote a bud
25% 25% 25% 25%
1 2 3 4

At the end of Prophase 1 in meiosis 1 the chromosomes are
1.
2.
3.
4.
Not replicated
Attached to spindle fibers
Scattered throughout the cell
Arranged as a tetrad
25% 25% 25% 25%
1 2 3 4

Binary fission is
1.
2.
3.
4.
A nuclear division of cells
Eukaryotic cell division
Sexual reproduction of prokaryotes
Prokaryotic cell division
25% 25% 25% 25%
1 2 3 4

Interphase is
1.
2.
3.
4.
Composed of G
1
, G
2
, and G
3
Time between Meiosis
1 and Meiosis 11
A small part of the life cycle of the cell
A time of cell growth and development
25% 25% 25% 25%
1 2 3 4

Crossing over occurs during
1.
2.
3.
4.
Meiosis 1
Mitosis
Interphase
Meiosis II
25% 25% 25% 25%
1 2 3 4

Oogenesis
3.
4.
1.
2.
Produces diploid cells
Requires meiotic cell divisions
Produces 4 egg cells
Produces 1 diploid cell and 3 polar bodies
25% 25% 25% 25%
1 2 3 4

Cytokinesis
1.
2.
3.
4.
Differs in animal and plant cells
Does not occur in plant cells
Immediately precedes mitosis
Is a process of nuclear division
25% 25% 25% 25%
1 2 3 4

Spermatogenesis produces
1.
2.
3.
4.
4 haploid cells
4 diploid cells
One haploid cell and
3 polar bodies
2 haploid cells
25% 25% 25% 25%
1 2 3 4

2.
3.
4.
1.
Chromatin is
Dark stain
A dense substance inside the nuclear membrane of a nondividing cell
1 of 2 identical parts that make up a chromosome
The point where each chromosome is joined
25%
1
25% 25% 25%
2 3 4

Every species has
2.
3.
4.
1.
A diploid number of chromosomes in the gamete cells
Blue eyes
Haploid gamete cells
A distinct number of chromosomes per cell
25% 25% 25% 25%
1 2 3 4

During cell division, the DNA in a eukaryotic cell is tightly packed and
25% 25%
3.
4.
1.
2.
Centromeres
Histones
Haploids
Chromosomes
1 2 3 4

If an organism has a diploid number of
16, how many chromosomes do its sperm cells or egg cells contain?
25% 25%
1.
2.
3.
4.
8
16
32
64
1 2 3 4

The fibers that extend from centrosome to centrosome during mitosis
25% 25% 25% 25%
1.
2.
3.
4.
Polar fibers
Spindle fibers
Kinetochore fibers
Binary fission
1 2 3 4

In the G
0 phase, cells
3.
4.
1.
2.
Synthesize DNA
Prepare for cell division
Exit from cell cycle
Move their chromosomes to the cell equator
25% 25% 25% 25%
1 2 3 4

During synapsis the
3.
4.
1.
2.
DNA in each chromosome is copied
Spindle fibers disappears
Cytoplasm divides
Chromosomes line up next to their homologoues
25% 25% 25% 25%
1 2 3 4

2.
3.
4.
1.
During crossing over, portion of chromatids
25% 25% in each chromosome
Move from autosomes to sex chromosomes
Break off and attach to adjacent chromatids on the homologous chromosome
Separate from each other and move to opposite poles of the cell
1 2 3
25%
4

1.
2.
3.
4.
Meiosis II
Is preceded by the copying of DNA
Separates chromatids into opposite poles of the cell
Separates homologous chromosomes into opposite pole of the cell
Produces diploid offspring cells
25%
1
25% 25% 25%
2 3 4

In which phase of meiosis do tetrads form?
1.
2.
3.
4.
Prophase I
Telophase I
Metaphase II
Anaphase II
25% 25% 25% 25%
1 2 3 4

Chromosomes that are not involved in sex determination are called
1.
2.
3.
4.
Chromatids
Chromatin
Autosomes
Gametosomes
25% 25% 25% 25%
1 2 3 4

The chromosomes in somatic cells always occurs in
1.
2.
3.
4.
Asters
Meiosis
Haploid number
Pairs
25% 25% 25% 25%
1 2 3 4

1.
2.
3.
4.
A student can study a karyotype to learn about
Molecular structure of a chromosome
Chromosomes present in a somatic cell
Genes that are present inn a particular strand of DNA
Medical history of an individual
25%
1
25%
2
25%
3
25%
4

What stage of meiosis?
1. Anaphase I
2. Anaphase II
3.Telophase I
4. Telophase II 25% 25% 25% 25%
1 2 3 4

What stage of mitosis?
1.
2.
3.
4.
Prophase
Metaphase
Anaphase
Telophase
25% 25% 25% 25%
1 2 3 4

What stage is this diagram in meiosis?
1.
2.
3.
4.
Metaphase I
Metaphase II
Anaphase I
AnaphaseII
25% 25% 25% 25%
1 2 3 4

What stage would be next in mitosis?
1.
2.
3.
4.
Prophase
Metaphase
Anaphase telophase
25% 25% 25% 25%
1 2 3 4

What is attaching to this chromosome?
1.
2.
Polar fibers
Kinetochore fiber
50% 50%
1 2

Where did these fibers come from?
1.
2.
3.
4.
Nuclear membrane
Centrosome
Ribosome equator
25% 25% 25% 25%
1 2 3 4

These cells would most likely come from a
1.
2.
Male female
50% 50%
1 2

Which phase would occur next?
1.
2.
3.
4.
Metaphase I
Anaphase II
Prophase II
Metaphase II
25% 25% 25% 25%
1 2 3 4