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