The term ‘gene' refers to
Sequence of amino acids in protein
A linkage group
A part of $RNA$
A portion of $DNA$
Core particle of nucleosome is composed of how many histones
Which of the following does not code for any proteins?
The genes, which are confined to differential region of $Y$ chromosome only, are called
Which one of the following true
$A$ : Nutritional mutant strain of pink mould is auxotroph.
$R$ : It is not able to prepare its own metabolites from the raw materials obtained from outside