Interphase
Interphase is the period between cell divisions.
During this time, chromosomes replicate—each
DNA strand unzips into two strands while
free-floating bases attach to the unzipped strands.
The chromosomes are loosely packed and not visible
with a microscope.
Two pair of centrioles lie just outside the nucleus,
next to each other. A centriole is a cylindrical
structure within the cell that plays a part in cell
reproduction.
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Interphase I
The activities within this cell are the same as in
the mitosis-dividing cell.
NOTE: Blue indicates chromosomes from the father;
orange indicates chromosomes from the mother. The
titles used for each step—e.g.,
"Interphase," Interphase I"—are those used
in biology textbooks.
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