1.

It is difficult to observe individual chromosomes with a light microscope during prophase because

A. the DNA has not been replicated yet.
B. they are uncoiled in long, thin strands.
C. they leave the nucleus and are dispersed to other parts of the cell.
D. sister chromatids do not pair up until division starts.
Answer» C. they leave the nucleus and are dispersed to other parts of the cell.


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