The structure present on the chromosomes is:

What is the structure called when bands are observed in the arms of chromosomes under an electron microscope?

Polytene chromosomes in the salivary glands of Dipteran larvae are useful in gene mapping because they ..........

$DNA$ genetic material occurs by itself in lower organisms and combined with proteins as nucleoproteins in higher organisms. The nucleoprotein is organized in higher forms to form

Some chromosomes have non-staining secondary constrictions at a constant location. What are these small fragments called?

Different types of chromosomes can be recognised by the position of the following separating the two arms.