What is referred to a satellite chromosomes?

Satellite chromosomes:

1. Satellite chromosomes or SAT chromosomes is an abbreviated form of 'Sine- Acido-Thymonucleico’ meaning without thymonucleic acid as it do not get stain with Feulgen reaction.
2. Satellites are present as secondary constrictions at the tip of chromosomes that carries NOR (nucleolus organising region) ie site for nucleolus formation.
3. They represent a heterochromatin region containing less DNA than RNA.