The very nature of these experiments meant that it was rare for all chromosomes in a given nucleus to ... are placed on a microscope slide and then literally squashed under a cover slip to produce ...

However, its exact location within a cell depends on whether that cell possesses a special membrane-bound organelle called a nucleus ... to see chromosomes with a standard light microscope ...

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 ...