DNA Behaviour: 23 Chromosome Pairs in Cell Nucleus

[skyshrimp]

I was looking at this page and in the diagram (3rd image down) it shows 23 pairs of chromosomes.

http://www2.le.ac.uk/departments/genetics/vgec/highereducation/topics/dnageneschromosomes

Do they all fit together to make one strand or is there 23 separate pairs of chromosomes in the nucleus of a cell?

 

[Ygggdrasil]

They are separate entities in the nucleus. There may be noncovalent interactions between chromosomes mediated by protein factors, but the chromosomes are not connected to each other covalently.