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Chromosomes are duplicated during the ____ of the cell cycle.
a. G2 phase
b.
S phase
c. G1 phase
d.
metaphase
e.
prophase
Eukaryotic chromosomes are composed of:
a.
karyotypes.
b.
DNA only.
c.
proteins only.
d.
chromatin.
e.
circular chromatin.
The mitotic spindle is made of:
a.
condensin.
b.
Z rings.
c.
microtubules.
d.
motor proteins.
e.
histones
Homologous chromosomes can be identified and/or characterized by:
a.
paternal chromosomes only.
b.
maternal chromosomes only.
c.
those chromosomes that do not have partners.
d.
the different centromere positions in the maternal vs. paternal chromosomes.
e.
their similar and characteristic staining patterns.
____ contain identical DNA sequences and are held together by ____ during mitosis.
a.
Sister chromatids; cohesin proteins
b.
Daughter chromosomes; ionic bonding
c.
Daughter chromosomes; hydrogen bonding
d.
Sister chromosomes; histone proteins
e.
Sister chromatids; spindle fibers
____ organized on chromosomes carry the information that controls the functions of the cell.
a.
Proteins
b.
Asters
c.
Histones
d.
Genes
e.
Nucleosomes
In a human cell at prophase I, there are ____ tetrads.
a.
92
b.
46
c.
23
d.
2
e.
4
Nucleosomes are best described as:
a.
eukaryotic DNA associated with histone proteins.
b.
prokaryotic DNA associated with nonhistone proteins.
c.
eukaryotic DNA associated with nonhistone proteins.
d.
prokaryotic DNA associated with histone proteins.
e.
eukaryotic DNA associated with scaffolding proteins.
In a prometaphase cell, the:
a.
sp...