Pars amorpha is associated with

Which of the following is a characteristic of a telocentric chromosome?

The $Feulgen$ reaction is used to stain which of the following?

Where is the satellite found?

The structure of the nucleus does not include which of the following?

The genomic content of the nucleus is constant for a given species,whereas the extrachromosomal $DNA$ is found to be variable among the members of a population. Explain.