Chromatin consists of:

$A$ chromosome having the centromere in its middle is called:

In the given figure,what does $C$,which is associated with the transport of $m-RNA$,represent?

Which of the following cell organelles lacks a membrane?

Which of the following are used to define the karyotype of a species?
$1$. The number of chromosomes
$2$. The chromosome length
$3$. The positions of the centromeres

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