Biology Chapter 10
____ organized on chromosomes carry the information that controls the functions of the cell
Genes
Duplicated centrioles move to opposite poles of a dividing ____ cell during the ____ of the cell cycle.
animal; prophase
Gametophyte plants produce gametes using:
mitosis
At the completion of oogenesis, ____ are produced
one egg cell and three polar bodies
____ contain identical DNA sequences and are held together by ____ during mitosis.
Sister chromatids; cohesin proteins
A cell is dividing by binary fission. What can you conclude?
The cell is prokaryotic
An animal with a diploid number of 36 chromosomes will have ____ chromosomes in its gametes and ____ chromosomes in its somatic cells
18; 36
To prevent disastrous consequences, the eukaryotic cell cycle is controlled by
a series of cell cycle checkpoints
During prophase I, each chiasma represents:
a site of crossing over
Cytokinesis in animal cells involves contraction of a ring of ____ microfilaments
actin plus myosin
Eukaryotic chromosomes are composed of
chromatin
Which event occurs in prophase II?
condensation of the chromatin into chromosomes
To control the cell cycle:
cyclins fluctuate during the cell cycle.
Plant hormones known as ____ stimulate mitosis
cytokinins
Nucleosomes are best described as:
eukaryotic DNA associated with histone proteins
A cell in the G2 phase:
has twice the amount of DNA present in a telophase nucleus
The function of nucleosomes is to:
prevent DNA strands from tangling
Homologous chromosomes can be identified and/or characterized by:
their similar and characteristic staining patterns
Which of the following is produced by meiosis?
zygotes