-At this stage you are UNABLE to see the chromosomes under a LIGHT MICROSCOPE.
-Now each chromosome consists of TWO DNA REPLICA STRANDS= SISTER CHROMATIDS.
-Next the sister chromatids must be SUPERCOILED to form VISIBLE chromosomes.
-Now they can take up stains and be seen under a light microscope.
-Before being supercoiled they are around 30nm thick and after they are around 500nm thick.
-They can't perform their normal functions in this state so the length of time they are in a supercoiled state needs to be as short as possible.
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