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A cell spends 90 percent of its time in the first three phases of the cycle, which are collectively called ...............
interphase
In the ...... phase, cells increase in size and synthesize new proteins and organelles.
G1
Some somatic cells, such as .................., never divide.
most muscle and nerve cells
In the .............. phase, new DNA is synthesized when the chromosomes are replicated.
S (or synthesis)
..................is the division of the cell nucleus.
Mitosis
......................is the division of the cytoplasm.
Cytokinesis
.........................– the area where each pair of chromatids is joined
Centromere
.................– tiny structures located in the cytoplasm of animal cells that help organize the spindle
Centrioles
.......................– a fanlike microtubule structure that helps separate the chromatids
Spindle
During ..........The centrioles move to opposite sides of nucleus and help organize the spindle.
Prophase
